K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

I. Put the verbs into the correct forms.
1. If people (be)…………….fully aware of the dangers of air pollution, they (damage) _____________ the atmosphere this way.
2. If I (be) _____________ you, I (turn) _____________ the volume down for him to sleep.
3. We (not be) _____________ able to drink that water if it is not refined.
4. If you (reduce) _____________ the number of bulbs in your house, you (pay) _____________ less money for the electricity bill next month.
5. If many animals and plants die, it (unbalance) _____________ our ecosystem.
6. I’ll only stay if you (offer) _____________ me more money.
7. If anyone (call) _____________, tell them I'm not at home.
8. If he (improve) _____________ his IT skills, he'd easily get a job.
9. If I was in charge, I (do) _____________ things differently.
10. She (glare) _____________ at me if I go near her desk.
11. If I were you, I (not do) _____________ that.
12. If I (have) _____________ more time, I would do more on my websites.
13. If I were a rich man, I (buy) _____________ a home like palace.
14. If I (speak) _____________ English very well, I would look for a job in foreign companies.
15. If I (understand) _____________ what the teacher said, I could tell you.
16. If I (have) _____________ time, I (finish) _____________ that letter.
17. What you (do) _____________ if you (miss) _____________ the plane?
18. Nobody (notice) _____________ if you (make)_____________ a mistake.
19. If you (drop) _____________ that glass, it (break) _____________.
20. If you (not leave) _____________, I (call) _____________ the police.

0
9. Put the verbs in brackets into the correct form. 1. If you (send) this letter now, she (receive) it tomorrow. 2. Kate (go) shopping if she (have) time in the afternoon. 3. She (spend) a year in the USA if it (be) easier to get a green card. 4. If her boyfriend (phone/ not) today, she (leave) him. 5. If you (go) by bike more often, you (be/ not) so flabby. 6. If he (have) more time, he (earn) karate. 7. He (not buy) so much clothes if he (not have) . 8. If I (play) the lottery...
Đọc tiếp
9. Put the verbs in brackets into the correct form. 1. If you (send) this letter now, she (receive) it tomorrow. 2. Kate (go) shopping if she (have) time in the afternoon. 3. She (spend) a year in the USA if it (be) easier to get a green card. 4. If her boyfriend (phone/ not) today, she (leave) him. 5. If you (go) by bike more often, you (be/ not) so flabby. 6. If he (have) more time, he (earn) karate. 7. He (not buy) so much clothes if he (not have) . 8. If I (play) the lottery yesterday, I (have) a chance to hit the jackpot. 9. If I (be) ) rich, my life (change) completely. 10. I (invite) ) all my friends if I (have) ) a house by the beach. 10. Write conditional sentences type I or II for these situation. l. People eat dirty food. They can be cancer. 2. A factory directly discharges a large volume of waste water into the Thi Vai River. The river is polluted. 3. Farmers use polluted water to water their plants. People eat these plants, they become sick with diseases such as diarrhea, bacterial inflections even cancer. 4. Thermal pollution takes place. The water temperature in streams, rivers, lakes and oceans will increase or decrease suddenly. 5. People live in radioactive pollution area. They can be skin cancer
0
4 tháng 11 2019

8. Put the verbs in brackets into the correct form of conditional sentence type 2.

1. If I (be) were the president, I (pass) would pass harder regulations for using fertilizers in agriculture.

2. If I (be) were you, I (not eat) wouldn't eat that genetically modified potatoes.

3. If big corporations (care) cared more about the environment and less about their own pockets, the pollution from factories (not increase) wouldn't increase so fast.

4. He (sort) would sort his trash, if he (be) were smart.

5. If the seas (pollute) polluted , maybe the population of whales (recover) would recover .

6. If I (not throw) didn't throw this can of Coke into the bushes, I (not know) wouldn't know that Coke is poison for wild animals.

7. If the factories (not dump) didn't dump untreated waste into the ocean, fish (die) would die massively.

8. What (do) would you do if you (be) were President.

9. If the air (not be) weren't dirty, the breathing problems (reduce) would reduce .

10. If I (own) owned a lonely island, I (build) would build a huge house by the beach.

25 tháng 10 2019

1. do/will improve
2. find/will give
3. will go/has
4. will go/gets
5. doesn't phone/will leave
6. don't study/leave
7. rains/won't have to
8. won't be able/watch
9. can't move/isn't

IV. (8Q9.13) Find mistake in each sentence and correct it. 1. What do you do if you won the first prize of the lottery? 2. Would people be able to fly if they have feathers instead of hair? 3. John now wishes he hasn’t broken his encouragement with Marian. 4. I would do it if I could, but I can’t so I wouldn’t even try. 5. If a drop of oil is placed in a glass of water, it would float on the surface. 6. If Peter had been more careful, he wouldn’t break the camera I lent him. 7. David...
Đọc tiếp
IV. (8Q9.13) Find mistake in each sentence and correct it. 1. What do you do if you won the first prize of the lottery? 2. Would people be able to fly if they have feathers instead of hair? 3. John now wishes he hasn’t broken his encouragement with Marian. 4. I would do it if I could, but I can’t so I wouldn’t even try. 5. If a drop of oil is placed in a glass of water, it would float on the surface. 6. If Peter had been more careful, he wouldn’t break the camera I lent him. 7. David wouldn’t have made such a lot of mistakes if he hasn’t been so tired. 8. How nice it would be for our parents if we could build the house. 9. He wouldn’t have able to pass the test if his English hadn’t been good enough. 10. If only we knew all this information about the market many weeks ago. V. (A8Q11.12) Choose the correct word to complete the sentences. 1. Don’t use ______ chemicals. They are harmful to our health. (to poison/ poison/ poisonous) 2. Water pollution has ______ the river. Nobody swim here. (contaminate/ contaminated/ contamination) 3. Water pollution causes the ______ of a lot of fish. (death/ to die/ dead) 4. Water pollution causes a lot of fish to______. (death/ die/ dead) 5. The acid rain has caused great (death/ to die/ dead) to the environment. (to damage/ damaged/ damage) 6. The polluted air ______ our health badly. (to damage/ damages/ damage) 7. The serious ______ has left the river with very few fish. (contaminate/ contaminated/ contamination) VI. (A8Q11.13) Give the correct form of the words given to complete the sentences. 1. Are all type of pollution ________ to the health of humans and animals? HARM 2. The __________ are concerned about the oil spills in East Sea. ENVIRONMENT 3. Dumping ____________ waste into the lakes and rivers has caused serious water pollution. INDUSTRY 4. Many people in this area have cholera because they drink ________ water. TREAT 5. Examples of primary __________ are exhaust fume from cars, ash from volcanic eruption. POLLUTION 6. If we use water ____________ more people will have fresh water. CARE 7. The polluted water results in the _____________ of many aquatic animals and plants. DIE 8. Too much carbon dioxide in the atmosphere causes global _________. WARM 9. The reduction in air pollution was ____________ last year. DRAMA 10. The road in front of my office is always _________ when it rains heavily. FLOOD VII. (A8Q11.30) Complete the second sentence so that it has a similar meaning to the first. 1. Climbing without a safety rope is forbidden. -> You aren’t..................................................................................................................................... 2. Mary hasn’t got a satellite TV, so he can’t watch the game. -> If .................................................................................................................................................. 3. Walking home alone is not a good idea. -> You ............................................................................................................................................... 4. Throw a stone into water and it sinks. -> If .................................................................................................................................................. 5. You can’t travel on this train, if you don’t have a reservation. Unless........................................................................................................................................... 6. “If I were you, I would take the job”, said Sue. -> Sue ................................................................................................................................................ 7. The exam question was so easy that we all got it right. -> It was ............................................................................................................................................ 8. Although he wasn’t experienced, he got the job. -> Despite.......................................................................................................................................... 9. Since you haven’t finished your homework, you can’t come with them. -> If ...................................................................................................................................................
0
Put the verbs in brackets: Conditional sentence type I or type II (I) 1.If you come with me, I (do) ........................the shopping with you. 2Jimmy (help)..................... his mother in the garden if she reads him a story this evening 3.If it (ran) ......................., i will stay at home. 4.Our teacher will be happy if we (learn) ...................... the poem by heart. 5.If they had enough money, they (buy) ...................... a new car. 6.We (pass)...
Đọc tiếp

Put the verbs in brackets: Conditional sentence type I or type II

(I)

1.If you come with me, I (do) ........................the shopping with you.

2Jimmy (help)..................... his mother in the garden if she reads him a story this evening

3.If it (ran) ......................., i will stay at home.

4.Our teacher will be happy if we (learn) ...................... the poem by heart.

5.If they had enough money, they (buy) ...................... a new car.

6.We (pass) ....................... the exam if we studied harder.

7.If Pat (repair)............................... his bike, he could go on a bicycle tour with us.

8.She would get 100 pounds if she (sell) .................................this old shelf.

9.If were you, I (invite) ................................... Jack to the party.

(II)

1.If Tracy had a mobile phone, she (phone) ..........................all her friends.

2.I will be very angry with Nick if he (forget) ........................... my CD again.

3.If the boys win this match, their coach (invite) ............................them to be a barbecue.

4.If you (not/read) .............................. these articles, you will not know the facts about Africa.

5.You (get) .................................very wet if you walked in this rain

6.The engine (not/start) ..........................if Ben connected these two cables.

7.If he (have) ............................. time , he will buy her some sweets.

8.Maria would play in the school orchestra if she (practice).......................... the trumpet more often.

9.We (not/fetch) .............................. something to drink if Jim does not bring some sandwiches.

10.If he (carry).......................... the ruckack, iwould pull the suitcase.

0
1. If we (recycle) _____ more, we will help the Earth. 2. Factories (not dump) _____ waste into rivers if the government fines them heavily. 3. Students will be more aware of protecting environment if teachers _____ (teach) environmental issues at school. 4. If light pollution ______ (happen), animals will change their behaviour patterns. 5. If people (travel) _____ to work by bus, there will be fewer car fumes. 6. We _____ (save) thousands of trees if we don’t waste paper. 7. If we use...
Đọc tiếp

1. If we (recycle) _____ more, we will help the Earth.

2. Factories (not dump) _____ waste into rivers if the government fines them heavily.

3. Students will be more aware of protecting environment if teachers _____ (teach) environmental issues at school.

4. If light pollution ______ (happen), animals will change their behaviour patterns.

5. If people (travel) _____ to work by bus, there will be fewer car fumes.

6. We _____ (save) thousands of trees if we don’t waste paper.

7. If we use water carefully, more people _____ (have) fresh water.

8. The level of radioactive pollution will decrease if we _____ (switch) from nuclear power to renewable energy sources.

9. If the water temperature (increase) _____, some aquatic creatures will be unable to reproduce.

10. People will get more diseases if the water (be) _____ contaminated.

11. If you (be) _____ the president, what would you do to help the environment?

12. They get sick so often. If they (exercise) _____ more, they (be) _____ healtheir.

13. If I had one million US dollars, I (build) _____ more parks in our city.

14. Ngoc’s mother is unhappy. If Ngoc (tidy) _____ her room everyday, her mother (not be) _____ so upset.

15. There isn’t a garden at our house. If there (be) _____, we (grow) _____ vegetables.

16. It (not be) _____ possible to save the Earth if we don’t take action now.

17. If the world temperatures continue to rise, there (be) _____ less snow.

18. If I (be) _____ you, I would wear earplugs when going to the concert.

19. If we do nothing to stop global warming, we (see) _____ big changes in the future.

20. How _____ you _____ (travel) to work if you didn’t have this motorbike?

21. Our garden is so beautiful. There (not be) _____ any flowers if my sister (not take care) _____ it every day.

22. If pigs (have) _____ wings, _____ (they/be able) to fly?

23. If I _____ (be) an astronaut, I _____ (travel) to other planets.

24. If you _____ (not see) Tom ever again, how _____ (you/feel)?

25. What _____ (you/do) if you _____ (see) a ghost?

26. If you _____ (eat) more of this cake, you _____ (be) sick. You’ve already had five slices!

27. Who _____ (you/vote) for if you _____ (be) eighteen?

28. If you _____ (be) late, we _____ (not wait). We’ll have to go without you!

29. If the ozone layer is not protected, we _____ (suffer) from excessive ultraviolet radioation.

30. If you _____ (leave) the lights that you are not using on, you’ll cause over-illumination, a form of light pollution.

31. Soil pollution _____ a serious problem to solve if levels of pollutants in soil go beyond what should be naturally allowed.(be)

32. If your farming land _____ near a landfill or an industrial area, it is essential that you test the soil for pollutants before growing anything adible. (be)

33. You will be less likely to suffer lung cancer if you _____. (not smoke)

34. If it is sunny, we _____ a clean-up of the garden. (do)

35. If local residents _____ cutting trees for wood at this rate, the forest will soon be gone. (keep)

36. If we take good care of the garden, we _____ flowers all year round. (have)

37. If man _____ dumping waste into the sea, they will soon be victims. (keep)

38. We’ll go without Linh if she _____. (not come)

39. If everyone _____ a small contribution, we’ll be able to do a good cause. (make)

1
21 tháng 2 2020

bạn tham khảo nhé https://hoc24.vn/hoi-dap/question/777127.html

II. Put the verbs in brackets into the correct form. (conditional sentences type 1, 2) 1. If we (recycle) _____ more, we will help the Earth. 2. Factories (not dump) _____ waste into rivers if the government fines them heavily. 3. Students will be more aware of protecting environment if teachers _____ (teach) environmental issues at school. 4. If light pollution ______ (happen), animals will change their behaviour patterns. 5. If people (travel) _____ to work by bus, there will be fewer...
Đọc tiếp

II. Put the verbs in brackets into the correct form. (conditional sentences type 1, 2)

1. If we (recycle) _____ more, we will help the Earth.

2. Factories (not dump) _____ waste into rivers if the government fines them heavily.

3. Students will be more aware of protecting environment if teachers _____ (teach) environmental issues at school.

4. If light pollution ______ (happen), animals will change their behaviour patterns.

5. If people (travel) _____ to work by bus, there will be fewer car fumes.

6. We _____ (save) thousands of trees if we don’t waste paper.

7. If we use water carefully, more people _____ (have) fresh water.

8. The level of radioactive pollution will decrease if we _____ (switch) from nuclear power to renewable energy sources.

9. If the water temperature (increase) _____, some aquatic creatures will be unable to reproduce.

10. People will get more diseases if the water (be) _____ contaminated.

11. If you (be) _____ the president, what would you do to help the environment?

12. They get sick so often. If they (exercise) _____ more, they (be) _____ healtheir.

13. If I had one million US dollars, I (build) _____ more parks in our city.

14. Ngoc’s mother is unhappy. If Ngoc (tidy) _____ her room everyday, her mother (not be) _____ so upset.

15. There isn’t a garden at our house. If there (be) _____, we (grow) _____ vegetables.

16. It (not be) _____ possible to save the Earth if we don’t take action now.

17. If the world temperatures continue to rise, there (be) _____ less snow.

18. If I (be) _____ you, I would wear earplugs when going to the concert.

19. If we do nothing to stop global warming, we (see) _____ big changes in the future.

20. How _____ you _____ (travel) to work if you didn’t have this motorbike?

21. Our garden is so beautiful. There (not be) _____ any flowers if my sister (not take care) _____ it every day.

22. If pigs (have) _____ wings, _____ (they/be able) to fly?

23. If I _____ (be) an astronaut, I _____ (travel) to other planets.

24. If you _____ (not see) Tom ever again, how _____ (you/feel)?

25. What _____ (you/do) if you _____ (see) a ghost?

26. If you _____ (eat) more of this cake, you _____ (be) sick. You’ve already had five slices!

27. Who _____ (you/vote) for if you _____ (be) eighteen?

28. If you _____ (be) late, we _____ (not wait). We’ll have to go without you!

29. If the ozone layer is not protected, we _____ (suffer) from excessive ultraviolet radioation.

30. If you _____ (leave) the lights that you are not using on, you’ll cause over-illumination, a form of light pollution.

31. Soil pollution _____ a serious problem to solve if levels of pollutants in soil go beyond what should be naturally allowed.(be)

32. If your farming land _____ near a landfill or an industrial area, it is essential that you test the soil for pollutants before growing anything adible. (be)

33. You will be less likely to suffer lung cancer if you _____. (not smoke)

34. If it is sunny, we _____ a clean-up of the garden. (do)

35. If local residents _____ cutting trees for wood at this rate, the forest will soon be gone. (keep)

36. If we take good care of the garden, we _____ flowers all year round. (have)

37. If man _____ dumping waste into the sea, they will soon be victims. (keep)

38. We’ll go without Linh if she _____. (not come)

39. If everyone _____ a small contribution, we’ll be able to do a good cause. (make)

1
19 tháng 2 2019

II. Put the verbs in brackets into the correct form. (conditional sentences type 1, 2)

1. If we (recycle) __recycle___ more, we will help the Earth.

2. Factories (not dump) _won't dump____ waste into rivers if the government fines them heavily.

3. Students will be more aware of protecting environment if teachers __teach___ (teach) environmental issues at school.

4. If light pollution ___happens___ (happen), animals will change their behaviour patterns.

5. If people (travel) ___travel__ to work by bus, there will be fewer car fumes.

6. We ___will save__ (save) thousands of trees if we don’t waste paper.

7. If we use water carefully, more people _will have____ (have) fresh water.

8. The level of radioactive pollution will decrease if we __switch___ (switch) from nuclear power to renewable energy sources.

9. If the water temperature (increase) __increases___, some aquatic creatures will be unable to reproduce.

10. People will get more diseases if the water (be) ___is__ contaminated.

11. If you (be) __were___ the president, what would you do to help the environment?

12. They get sick so often. If they (exercise) __exercised___ more, they (be) ___would be__ healtheir.

13. If I had one million US dollars, I (build) __would build___ more parks in our city.

14. Ngoc’s mother is unhappy. If Ngoc (tidy) __tidied___ her room everyday, her mother (not be) ___would not be__ so upset.

15. There isn’t a garden at our house. If there (be) __were___, we (grow) __would grow___ vegetables.

16. It (not be) ___won't be__ possible to save the Earth if we don’t take action now.

17. If the world temperatures continue to rise, there (be) __will be___ less snow.

18. If I (be) __were___ you, I would wear earplugs when going to the concert.

19. If we do nothing to stop global warming, we (see) __will see___ big changes in the future.

20. How __would___ you ___travel__ (travel) to work if you didn’t have this motorbike?

21. Our garden is so beautiful. There (not be) __wouldn't be___ any flowers if my sister (not take care) ___didn't take care__ it every day.

22. If pigs (have) __had___ wings, __would they be able___ (they/be able) to fly?

23. If I ___were__ (be) an astronaut, I ____would travel_ (travel) to other planets.

24. If you __didn't see___ (not see) Tom ever again, how ___would you feel__ (you/feel)?

25. What __would you do___ (you/do) if you __saw___ (see) a ghost?

26. If you __eat___ (eat) more of this cake, you __will be___ (be) sick. You’ve already had five slices!

27. Who __would you write___ (you/vote) for if you __were be___ (be) eighteen?

28. If you __were be___ (be) late, we ____didn't wait_ (not wait). We’ll have to go without you!

29. If the ozone layer is not protected, we ___will suffer__ (suffer) from excessive ultraviolet radioation.

30. If you ___leave__ (leave) the lights that you are not using on, you’ll cause over-illumination, a form of light pollution.

31. Soil pollution __will be___ a serious problem to solve if levels of pollutants in soil go beyond what should be naturally allowed.(be)

32. If your farming land __is___ near a landfill or an industrial area, it is essential that you test the soil for pollutants before growing anything adible. (be)

33. You will be less likely to suffer lung cancer if you ___don't smoke__. (not smoke)

34. If it is sunny, we _will do____ a clean-up of the garden. (do)

35. If local residents ___keep__ cutting trees for wood at this rate, the forest will soon be gone. (keep)

36. If we take good care of the garden, we _will have____ flowers all year round. (have)

37. If man __keep___ dumping waste into the sea, they will soon be victims. (keep)

38. We’ll go without Linh if she __doesn't come___. (not come)

39. If everyone __makes___ a small contribution, we’ll be able to do a good cause. (make)

#Yumi

Exercise 9 : Rewrite the following sentences: 1. He can’t go out because he has to study for his exam. => If........................................................... 2. She is lazy so she can’t pass the exam. If.................................................................. 3. He will pay me tonight; I will have enough money to buy a car. => If...................................................................... 4. He smokes too much; that’s why he can’t get rid of his...
Đọc tiếp
Exercise 9 : Rewrite the following sentences: 1. He can’t go out because he has to study for his exam. => If........................................................... 2. She is lazy so she can’t pass the exam. If.................................................................. 3. He will pay me tonight; I will have enough money to buy a car. => If...................................................................... 4. He smokes too much; that’s why he can’t get rid of his cough. => If....................................................................... 5. She is very shy, so she doesn’t enjoy the party. => If....................................................................... 6. I will get a work permit. I will stay for another month. => If...................................................................... 7. He doesn’t take any exercises. He is so unhealthy => If......................................................................... 8. We can’t get the ticket because I don’t have the right change. => If.......................................................................... 9. Study hard or you won’t pass the exam. => If............................................................................. 10. Don’t be impatient or you will make mistakes. => If................................................................................ 11. I d i d n ’t eat l un ch, I feel h un gry now. => If I...................................................... 12. I only come if they invite me. => unless....................................................... 13. He didn’t revise all his lessons, he failed the exam. => If he................................................................. 14. The park is over there, only 5 minutes’ walk. => If you walk....................................................... 15. Leave me alone or I’ll call the police. =>Unless................................................................................................ 16. If you arrive at the office earlier than I do, please turn on the air­conditioner. => Should........................................................................................... 17. The children don’t go to school in the snowy weather. => If it .......................................................................................... 18. He died so young; otherwise, he would be a famous musician by now. =>Had .......................................................................................... 19. You must tell me the whole truth or I won’t help you. => Unless.......................................................................................... 20. The car breaks down so often because you don’t take good care of it. => Were I.......................................................................................... 21. He is very bad­tempered, that’s why his wife left him soon after marriage. => If he.......................................................................................... 22. Don’t tell lies to your boss or you’ll be fired at once. => If....................................................................................... 23. She got married at such an early age: otherwise, she would be at university now. => Had ....................................................................................
2
3 tháng 1 2019

1. He can’t go out because he has to study for his exam.
=> If he didn't have to study for his exam, he could go out.
2. She is lazy so she can’t pass the exam.
=> If she weren't lazy, she could pass the exam.
3. He will pay me tonight; I will have enough money to buy a car
=> If he doesn't pay me tonight, I won't have enough money to buy a car.
4. He smokes too much; that’s why he can’t get rid of his cough.
=> If he didn't smoke too much, he could get rid of cough.
5. She is very shy, so she doesn’t enjoy the party.
=> If she weren't very shy, she would enjoy the party.
6. I will get a work permit. I will stay for another month.
=> If I don't get a work permit, I won't stay for another month.
7. He doesn’t take any exercises. He is so unhealthy
=> If he took any exercises, he wouldn't be so healthy.
. 8. We can’t get the ticket because I don’t have the right change.
=> If I had the right change, we could get the ticket.
9. Study hard or you won’t pass the exam.
=> If you don't study hard, you won't pass the exam.
10. Don’t be impatient or you will make mistakes
=> If you are not impatient, you won't make mistakes.
11. I d i d n ’t eat l un ch, I feel h un gry now.
=> If I ate lunch, I wouldn't fell hungry.
12. I only come if they invite me.
=> Unless they invite me, I won't come.
13. He didn’t revise all his lessons, he failed the exam.
=> If he revised all his lessons, he wouldn't failed the exam.

5 tháng 1 2019

Exercise 9 : Rewrite the following sentences:

1. He can’t go out because he has to study for his exam.

=> If.....he didn't have to study for his exam, he could go out.......

2. She is lazy so she can’t pass the exam.

=> If...........she weren't lazy, she could pass the exam..............

3. He will pay me tonight; I will have enough money to buy a car.

=> If.......he pays me tonight, I will have enough money to buy a car...........

4. He smokes too much; that’s why he can’t get rid of his cough.

=> If..............he didn't smoke too much, he could get rid of his cough...............

5. She is very shy, so she doesn’t enjoy the party.

=> If................she weren't very shy, she would enjoy the party..................

6. I will get a work permit. I will stay for another month.

=> If..............I get a work permit, I will stay for another month

7. He doesn’t take any exercises. He is so unhealthy

=> If.........he took any exercises, he were so healthy....................

8. We can’t get the ticket because I don’t have the right change. => If...........I had the right change, we could get the ticket...............

9. Study hard or you won’t pass the exam.

=> If.......you study hard, you will pass the exam................

10. Don’t be impatient or you will make mistakes.

=> If......you are impatient ,you will make mistake............

11. I did n ’t eat lunch, I feel hungry now.

=> If I.........had eaten luch ,I wouldn't have felt hungry now.............

12. I only come if they invite me.

=> unless..........they invite me ,I won't come..................

13. He didn’t revise all his lessons, he failed the exam.

=> If he........had revised all his lesson, he wouldn't have failed the exam.............

14. The park is over there, only 5 minutes’ walk.

=> If you walk........to the park, it will take 5 minutes..........

15. Leave me alone or I’ll call the police. =>Unless...............you leave me alone , I will call the police...............

16. If you arrive at the office earlier than I do, please turn on the air­conditioner.

=>Should...........you arrive at the office earlier than I do, please turn on the air­conditioner.................

17. The children don’t go to school in the snowy weather.

=> If it.......snows, the children won't go to school.........

18. He died so young; otherwise, he would be a famous musician by now.

=>Had..............he not died so young, he would have been a famous musician by now...................

19. You must tell me the whole truth or I won’t help you.

=>Unless..........you tell me the whole truth, I won't help you..............

20. The car breaks down so often because you don’t take good care of it.

=>Were I.......took good care of the car, it wouldn't break down so often...........

21. He is very bad­tempered, that’s why his wife left him soon after marriage. => If he.................weren't badtempered, his wife wouldn't left him soon after marriage................

22. Don’t tell lies to your boss or you’ll be fired at once.

=> If..............you tell lies to you boss, you will be fired at once.......................

23. She got married at such an early age: otherwise, she would be at university now.

=> Had .............she not married at such an early age, she would have been at university now..................