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help me!!! Choose the correct answer 1,A stop B stopped 5,A will B would 2,A give B gave 6,A live B will live 3,A will eat B ate 7,A will B would 4, A get B would get 8,A will B would Dear Marsha I'm not sure what to do I'm thinking of becoming a vegetable, but some of my friends say it's a bad idea. They say that if I (1)__ eating meat, my body won't get all the things it needs to say healthy. Are my friends right? Thanks, Yuri, age 14 Dear Yuri Millions of people vegetable and...
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help me!!!

Choose the correct answer

1,A stop B stopped 5,A will B would

2,A give B gave 6,A live B will live

3,A will eat B ate 7,A will B would

4, A get B would get 8,A will B would

Dear Marsha

I'm not sure what to do I'm thinking of becoming a vegetable, but some of my friends say it's a bad idea. They say that if I (1)__ eating meat, my body won't get all the things it needs to say healthy. Are my friends right?

Thanks,

Yuri, age 14

Dear Yuri

Millions of people vegetable and they're perfectly healthy. You have to be careful, though if you (2)__ up eating meat completely, and only (3)___ chocolate and crips, that would obiviously be very baf for you ! If people don't eat properly, they (4)___ ill.It's that simple.If you eat lots of fruit ad salad and beans, you (5)___ get all the things you need to say healthy.But you're only 14years old. If you (6)___ at home with your parents and you probably do -you'll have to ask them what they think too. If your mum cooks for you , (7) it __ be difficult for her to make you special meals. If I were you, I (8)___ think about this carefully and maybe wait until you're a bit older before making such a big decision.

Marsha

Complete using the correct form of the words in brackets

1, If you ___(tell) me you were going to the beach, I'd have come with you

2, If Dan had missed the plane, he __(be) very annoyed

3, I'd have got you a present if I ___(know) it was your birthday

4,We ___(not/get) lost if we'd taken a map with us

5, If the car ___(not/break down), I wouldn't have been late

6, If you ___(not /hep) me , I wouldn't have finished in time

7, If Baz___(not/show) you what to do, what ___(you/do)?

Complete using the correct form of the words in brackets

1, If you ___ (tell) me you were going to the beach ,I'd have come with you

2,If Dan had missed the plane, he ___(be) very annoyed

3,I'd have got you a present if I ___ (know) it was your birthday

4, We___ (not/get) lost if we'd taken a map with us

5,If the car ____(not/break down), I wouldn't have been late

6, If you ___(not/help) me, I wouln't have finished in time

7, If Baz ___(not/ show) you what to do, what ___(you/do)?

Complete each second so that it has a similar meaning to the first sentences. Write between two and five words

1, It wasn't cold, so we didn't light a fire

If it ___ cold , we'd have lit a fire

2, John didn't come, so we didn't do any thing

If John ___,we'd have done some painting

3, Claire didn't buy any clothes because she didn't see anything she liked

Claire ____some clothes if she'd seen something she liked

4,The audience laughted because the joke was very funny

If the joke ____very funny, the audience wouldn't have laughed

5, We decided to leave because it was really noisy

We ___ to leave if it hadn't been really noisy

6, Sylvia doesn't have enough money, so she can't buy a new computer

If Sylvia_______ enough money, she'd buy a new computer

7, The twins don't see their friends often because they're very busy

If the twins weren't so busy, they____ their friends more often

8, Grandma won't get a dog because she lives in a small flat

If Grandma____in a small flat, she'd get a dog

9, I think you should tell your parents the truth

If I ___ you, I'd tell your parents the truth

1
18 tháng 4 2018

Choose the correct answer

1,A stop B stopped 5,A will B would

2,A give B gave 6,A live B will live

3,A will eat B ate 7,A will B would

4, A will get B would get 8,A will B would

Dear Marsha

I'm not sure what to do I'm thinking of becoming a vegetable, but some of my friends say it's a bad idea. They say that if I (1)_stop_ eating meat, my body won't get all the things it needs to say healthy. Are my friends right?

Thanks,

Yuri, age 14

Dear Yuri

Millions of people vegetable and they're perfectly healthy. You have to be careful, though if you (2)_gave _ up eating meat completely, and only (3)_ate__ chocolate and crips, that would obiviously be very baf for you ! If people don't eat properly, they (4)_will get__ ill.It's that simple.If you eat lots of fruit ad salad and beans, you (5)_will__ get all the things you need to say healthy.But you're only 14years old. If you (6)__live_ at home with your parents and you probably do -you'll have to ask them what they think too. If your mum cooks for you , (7) it _will_ be difficult for her to make you special meals. If I were you, I (8)_would__ think about this carefully and maybe wait until you're a bit older before making such a big decision.

Marsha

Complete using the correct form of the words in brackets

1, If you _had told__(tell) me you were going to the beach, I'd have come with you

2, If Dan had missed the plane, he _would have been_(be) very annoyed

3, I'd have got you a present if I __had known_(know) it was your birthday

4,We _wouldn't have got__(not/get) lost if we'd taken a map with us

5, If the car _hadn't break down__(not/break down), I wouldn't have been late

6, If you _hadn't helped__(not /hep) me , I wouldn't have finished in time

7, If Baz_don't show__(not/show) you what to do, what _will you do__(you/do)?

Complete using the correct form of the words in brackets

1, If you _had told__ (tell) me you were going to the beach ,I'd have come with you

2,If Dan had missed the plane, he _would have been__(be) very annoyed

3,I'd have got you a present if I __had known_ (know) it was your birthday

4, We_wouldn't have got__ (not/get) lost if we'd taken a map with us

5,If the car _hadn't break down___(not/break down), I wouldn't have been late

6, If you __hadn't helped__(not/help) me, I wouln't have finished in time

7, If Baz __don't show__(not/ show) you what to do, what_will you do_(you/do)?

Complete each second so that it has a similar meaning to the first sentences. Write between two and five words

1, It wasn't cold, so we didn't light a fire

If it __had been_ cold , we'd have lit a fire

2, John didn't come, so we didn't do any thing

If John __had come_,we'd have done some painting

3, Claire didn't buy any clothes because she didn't see anything she liked

Claire __would have bought__some clothes if she'd seen something she liked

4,The audience laughted because the joke was very funny

If the joke __hadn't been__very funny, the audience wouldn't have laughed

5, We decided to leave because it was really noisy

We _wouldn't have decided_ to leave if it hadn't been really noisy

6, Sylvia doesn't have enough money, so she can't buy a new computer

If Sylvia____had___ enough money, she'd buy a new computer

7, The twins don't see their friends often because they're very busy

If the twins weren't so busy, they__would see__ their friends more often

8, Grandma won't get a dog because she lives in a small flat

If Grandma_didn't live___in a small flat, she'd get a dog

9, I think you should tell your parents the truth

If I _were__ you, I'd tell your parents the truth

27 tháng 4 2020

1: we didn't visit the museum because we didn't have time.

---> If we had had time, we would have visited the museum.

2: she got tired because she worked so hard.

---> If she hadn't worked so hard, she wouldn't have gotten tired.

3: he didn't pass the exam because he didn't work hard

---> If he had worked hard, he would have passed the exam.

4: they didn't attend the lectuer, so they were punished

----> If they had attended the lecture, they wouldn't have been punished.

5: I didn't have an unbrella with me so I got wet.

----> I wouldn't have gotten wet if I had had an umbrella.

6: you drink too much coffee , that's why you can't sleep

-----> If you didn't drink too much coffee, you could sleep.

7:dick is in prison because a detective recognized him.

----> If a detective hadn't recognized Dick, he wouldn't be in prison.

8: I don't have any money , so I can't lend you any .

---> If I had some money, I could lend you some.

9: I didn't have the money , so I didn't buy a new suit.

----> If I had had the money, I would have bought a new suit.

10: she doesn't live in london because she doesn't know anyone there.

----> If she knew someone in London, she would live there.

11: I can't live in the country because I don't find a job there .

---->If I found a job in the country, I could live here

9 tháng 1 2020

EX : Complete each of the following sentences in such a way that it means the same as the sentence printed before it.

1/ we didn't know your phone number ,so we could not contact you

If we had known your phone number, we could have contacted you

2/ Because Simon doesn't live near his mother,he can't visit her often

If Simon lived near his mother, he could visit her often.

3/ she didn't hurry , so she missed the train

If she had hurried, she would have caught the train.

6/ John is fat because he eats so many chips

If John didn't eat so many chips, he wouldn't be fat.

7/ Bill never does anything if you don't tell him what to do.

-> Unless................... you tell Tom what to do, he will never do anything.........................................

8/ They don't have enough time so they cannot do me a favour.

If they had enough time, they could do me a favor.

9/we did not visit the museum because we had no time .

If we had had time, we would have visited the museum.

10/ we can't buy this car because it is very expensive

This car is too expensive for me to buy.

11/ Susan felf sick because he ate 4 cream cakes

If Susan hadn’t ate 4 cream cakes, he wouldn’t have felt sick

9 tháng 1 2020

EX : Complete each of the following sentences in such a way that it means the same as the sentence printed before it.

1/ we didn't know your phone number ,so we could not contact you

=> If we had known your phone number , we would have contacted you

2/ Because Simon doesn't live near his mother,he can't visit her often

=> If Simon lived near his mother , he could visit her often

3/ she didn't hurry , so she missed the train

=> If she had hurried , she wouldn't have missed the train

6/ John is fat because he eats so many chips

=> If John didn't eat so many chips , he wouldn't be fat

7/ Bill never does anything if you don't tell him what to do.

-> Unless....Bill never does anything , you tell him what to do ........

8/ They don't have enough time so they cannot do me a favour.

=> If they had enough time , they could do me a favour

9/we did not visit the museum because we had no time

=> If we had had time , we would have visited the museum

10/ we can't buy this car because it is very expensive

=> If it weren't very expensive , we could buy this car

11/ Susan felf sick because he ate 4 cream cakes.

=> If Susan hadn't eaten 4 cream cakes , he wouldn't have felt sick

1) The schoolchildren sowed some seeds, but they forgot to water them so they didn't grow.->If the children....................... 2) They don't understand the problem. They won't find a solution.->Should..................... 3.He sits around too much. He isn't fit.->Were................. 4.Rita is exhausted today because she didn't get any sleep last night.->Had..................... 5.She's very thin; perhaps that's why she feels cold so much.-> If she............................. 6.He...
Đọc tiếp

1) The schoolchildren sowed some seeds, but they forgot to water them so they didn't grow.->If the children.......................

2) They don't understand the problem. They won't find a solution.->Should.....................

3.He sits around too much. He isn't fit.->Were.................

4.Rita is exhausted today because she didn't get any sleep last night.->Had.....................

5.She's very thin; perhaps that's why she feels cold so much.-> If she.............................

6.He never polishes his shoes, so he never looks smart.-> If he.......................

7.He can't park near his office; that's why he doesn't coe by car.-> If he......................

8. My house is guarded by two big dogs. That's the only reason it isn't broken into every night.->If my house..................

9.The flats are not clearly numbered, so it is very difficult to find anyone.-> If the flats.................................

10.I don't know her e-mail address, so I can't tell you.->Were...................................

1
18 tháng 8 2019

1) The schoolchildren sowed some seeds, but they forgot to water them so they didn't grow.->If the children......hadn't forgot to water some seeds, they would have grown.................

2) They don't understand the problem. They won't find a solution.->Should.......they understand the problem, they will find a solution..............

3.He sits around too much. He isn't fit.->Were....he to sit around to much, he would be fit.............

4.Rita is exhausted today because she didn't get any sleep last night.->Had......rita got sleep last night, she would be exhausted today...............

5.She's very thin; perhaps that's why she feels cold so much.-> If she......wasn't thin, she wouldn't cold so much.......................

6.He never polishes his shoes, so he never looks smart.-> If he.......polished his shoes, he would look smart................

7.He can't park near his office; that's why he doesn't come by car.-> If he........could park near his office, he would come by car..............

8. My house is guarded by two big dogs. That's the only reason it isn't broken into every night.->If my house..........weren't guarded by 2 big dogs, it would be broken into everynight........

9.The flats are not clearly numbered, so it is very difficult to find anyone.-> If the flats.....were clearly numbered, it wouldn't be very difficult to find............................

10.I don't know her e-mail address, so I can't tell you.->Were.....i to knew her email address, i could tell you.................

Ex: Rewriting 1 I'm busy so i can't go out with my friends ➞ If 2 He plays soccer well so he can take part in the Games ➞ If 3 She can't go to the party because i don't invite her ➞ If 4 I can't get a job easily because I don't have a degree ➞ If 5 He doesn't have enough money , so he doesn't buy a house ➞ If 6 It is raining heavily so we can't go to the market ➞ If 7 He will go to watch the World Cup because he is studying in Russi ➞ If 8 I didn't talk to him because i...
Đọc tiếp

Ex: Rewriting

1 I'm busy so i can't go out with my friends ➞ If

2 He plays soccer well so he can take part in the Games ➞ If

3 She can't go to the party because i don't invite her ➞ If

4 I can't get a job easily because I don't have a degree ➞ If

5 He doesn't have enough money , so he doesn't buy a house ➞ If

6 It is raining heavily so we can't go to the market ➞ If

7 He will go to watch the World Cup because he is studying in Russi ➞ If

8 I didn't talk to him because i didn't know him ➞ If

9 John didn't have money so he couldn't lend you some ➞ If

10 We couldn't go out because the weather was so bad ➞If

11 Mary didn't wear the raincoat, so she got a cold ➞If

12 Marry was injured in the crash because she wasnot wearing the seat belt ➞ If

13 Carol didn't answer the phone because he was studying ➞ If

14 You didn't eat breakfast, so you are hungry now➞If

15 I stayed up late last night, so i feel asleep now ➞If

16 I can't retell the film now because i didn't wlatch it last night ➞If

17 He is tired now because he drank too much yesterday evening➞If

18 I bought the car yesterday, so I run out of money nơ➝ If

19 He didn't go to the class regularly, so he can't take part in the competition now➞If

Mn giúp mình vs ạ

0
Chọn câu gần nghĩa nhất với câu đã cho 1. I don't know her phone number, so I can't call her A. You didn't give me her phone number, and I didn't call her B. I know her phone number but I haven't called her C. If I knew her phone number, I would call her D. I'll look up her phone number and I'd call her 2. "Would you like to come to my birthday party, Sarah?" asked Frederic is closest in meaning to "......" A. Frederic invited Sarah to his birthday party B. Frederic asked...
Đọc tiếp

Chọn câu gần nghĩa nhất với câu đã cho

1. I don't know her phone number, so I can't call her

A. You didn't give me her phone number, and I didn't call her

B. I know her phone number but I haven't called her

C. If I knew her phone number, I would call her

D. I'll look up her phone number and I'd call her

2. "Would you like to come to my birthday party, Sarah?" asked Frederic is closest in meaning to "......"

A. Frederic invited Sarah to his birthday party

B. Frederic asked Sarah if she likes his birthday party or not

C. Frederic reminded Sarah of his coming birthday party

D. Frederic asked if Sarah was able to come to his birthday party

3. The TV isn't working. You can't watch the football match

A. If the TV is working, we can watch the football match

B. If the TV were working, we could watch the football match

C.If the TV is working, we will watch the football match

D. If the TV were working, we can't watch the football match

5. "You look beautiful in this dress" - Last night she told me ........

A. You looked beautiful in that dress

B. I'll look beautiful in that dress

C. You look beautiful in that dress

D. You looked beautiful in the dress

6. I was sick yesterday, so I didn't go to class (Conditional sentence) If.........

7. I didn't have an umbrella with me, so I got wet

A. If I had had an umbrella, I wouldn't get wet

B. If I had had an umbrella, I wouldn't have got wet

C. If I had an umbrella, I wouldn't get wet

D. If I have an umbrella, I won't get wet

8. "Would you like som coffee?" Peter said

A. Peter offered giving me some coffee

B. Peter invited me some coffee

C. Peter wanted to know if I would like to make coffee

D. Peter asked me for some coffee

1
22 tháng 6 2020

Chọn câu gần nghĩa nhất với câu đã cho

1. I don't know her phone number, so I can't call her

A. You didn't give me her phone number, and I didn't call her

B. I know her phone number but I haven't called her

C. If I knew her phone number, I would call her

D. I'll look up her phone number and I'd call her

2. "Would you like to come to my birthday party, Sarah?" asked Frederic is closest in meaning to "......"

A. Frederic invited Sarah to his birthday party

B. Frederic asked Sarah if she likes his birthday party or not

C. Frederic reminded Sarah of his coming birthday party

D. Frederic asked if Sarah was able to come to his birthday party

3. The TV isn't working. You can't watch the football match

A. If the TV is working, we can watch the football match

B. If the TV were working, we could watch the football match

C.If the TV is working, we will watch the football match

D. If the TV were working, we can't watch the football match

5. "You look beautiful in this dress" - Last night she told me ........

A. You looked beautiful in that dress

B. I'll look beautiful in that dress

C. You look beautiful in that dress

D. You looked beautiful in the dress

6. I was sick yesterday, so I didn't go to class (Conditional sentence)

If I weren't sick yesterday , I would have gone to class

7. I didn't have an umbrella with me, so I got wet

A. If I had had an umbrella, I wouldn't get wet

B. If I had had an umbrella, I wouldn't have got wet

C. If I had an umbrella, I wouldn't get wet

D. If I have an umbrella, I won't get wet

8. "Would you like som coffee?" Peter said

A. Peter offered giving me some coffee

B. Peter invited me some coffee

C. Peter wanted to know if I would like to make coffee

D. Peter asked me for some coffee

#Yumi

I/ Complete the sentences with the correct form of the words in bracket. (conditional type 3) 1. I didn't go into business with Sam. If I had gone business with him, I would have become a success. 2. We got to the station in time to catch the train. If we....................(miss), it We ................ (be) late for the meeting. 3. Mary and I weren't able to go on a honeymoon We.............. (can/ go) away if my father ……. (not get) sick. 4. I took a taxi to the hotel but the traffic...
Đọc tiếp

I/ Complete the sentences with the correct form of the words in bracket. (conditional type 3)
1. I didn't go into business with Sam. If I had gone business with him, I would have become a success.
2. We got to the station in time to catch the train. If we....................(miss), it We ................ (be) late for
the meeting.
3. Mary and I weren't able to go on a honeymoon We.............. (can/ go) away if my father ……. (not get)
sick.
4. I took a taxi to the hotel but the traffic was very bad. It .................... (be) quicker if I....................
(walk)
5. It's good that you reminded me about Ann's birthday. I..............(forget) if you ……… (not remind)
me.
6. The view was wonderful. If I ………. (have) a camera, I …….. (take) some photographs.
7. Unfortunately, I didn't have my address book with me when I was in New York. If I …… (have) your
address, I ……….. (send) you a postcard.
8. We ………… (may/ be) at the airport for hours, if we ……… (not know) that the flight was
delayed.
9. The accident was your fault: If you ……… (drive) more carefully, it ………….. (not happen).
10. If you ………. (tell) me you needed money, ………. (can/ lend) you some.

II/ Put in the correct verb form:
1/ If I (be) _______ you, I (help) _______ her now.
2/ If she (be) _______ late, she will be punished.
3/ I could have understood him if he (speak) _______ more slowly.
4/ What (you/do) _______ if you (be) _______ a billionaire?
5/ You didn’t pay attention to the teacher’s explanation. If you (pay) _______ more attention, you (do)
_______ the exam well.
6/ She’s waiting for her uncle to come back from Ho Chi Minh city. If her uncle (come) _______ home,
she (have) _______ a lot of presents.
7/ Sang is a naughty boy and often makes fun ofhis classmates. If he (start) _______ a joke, someone (cry)
_______ bitterly.
8/ Chung wanted to buy some presents for his younger sister but he couldn’t. If he (afford) _______ to
buy, her younger sister (be) _______ happy to greet a new year.
9/ He is never willing to help poor people. If he (do) _______ something, the earth (stop) _______
moving.
10/ I didn’t know her mother was ill. If I (know) _______ that, I (come) _______ to visit her.

III. Identify the one underlined word or phrase A, B. C or D - that must be changed for the sentence
to be correct.

36. The dentist told to brush three times a day and don't eat candy.
A B C D
37. Before the final decision is reached, the various possibilities should probably
A B
discussed by the whole team.
C D
38. If we leave now for our trip, we can drive half the distance before we stop having lunch.
A B C D
39. I've been studying French since I've started high school.
A B C D
40. We could have given you a lift if we'd know you were coming this way.
A B C D
41. The car would survive the tornado, had it been parked on the other side of the road.
A B C D
42. Virgin Island National Park features an underwater' preserve with coral reefs and colorfully
A B C
tropical fish.
D
43. Among other reason, the Humane Society established to shelter animals, educate animal owners,
A C D
and influence legislation regarding the protection of animals.
D
44. The oceans contain many forms of life that has not yet been discovered.
A B C D
45. If Nick hadn't come along, I don't know what would happen.
A B C D

0
REWRITE THE FOLLOWING SENTENCES USING IF-> UNLESS TYPE1 1. If he doesn't hurry, he will be late for school -> unless 2. unless it stops raining, we won't go out -> if 3. you will get success if you are patient - unless 4. those flowers will die if nobody waters them - unless 5. no one can help him if he doesn't tell the truth - unless 6. you will catch a cold unless you keep your feet dry - if 7. if i don't catch the plane, i will not be home by five - unless 8. if you don't apologize, i will...
Đọc tiếp

REWRITE THE FOLLOWING SENTENCES USING IF-> UNLESS
TYPE1
1. If he doesn't hurry, he will be late for school
-> unless
2. unless it stops raining, we won't go out
-> if
3. you will get success if you are patient
- unless
4. those flowers will die if nobody waters them
- unless
5. no one can help him if he doesn't tell the truth
- unless
6. you will catch a cold unless you keep your feet dry
- if
7. if i don't catch the plane, i will not be home by five
- unless
8. if you don't apologize, i will never speak to you again
-unless
9. unless he gives me his number, i won't phone him
- if
10. he cannot do that exercise if he doesn't learn his lessons carefully
-unless

TYPE 2
1. unless the studied harder, he would fail the final exam
- if
2. unless the drank alcohol, he would pass the contest
- if
3. unless he phoned immediately, he wouldn't meet Mary
-if
4/ if we didn't have a calculator, we couldn't work his more quickly
-unless
5. if i weren't weak, i could walk
- unless
6. if you weren't slow now, you could uiwn the race
- unless
7. if you didn't speak very quickly, the students could hear you well
- unless
8. if tom didn't invite me, i wouldn't go to the party
- unless
9. if they didn;t know his number now, they wouldn't give it to me
- unless
10. unless he were careful, he would have serious accident
- if

TYPE3
1. if he hadn;t been too lazy, he wouldn't have failed the exam
- unless
2. unless yesterday had been a nice day, we wouldn;t have gone camping
-if
3. if you hadn't driven carefully, you would have had a serious accident
- unless
4. if the bus hadn't been crowded, he wouldn't have walked to the office
-unless
5. unless you had studied hard, you wouldn't have walked to the office
- if
6. unless you had helped me, i wouldn't have finished our homework
- if
7. unless the meeting were so long they wouldn't feel tired
- if
8. if he weren't too lazy, he would pass the exam
- unless

5
15 tháng 1 2018

REWRITE THE FOLLOWING SENTENCES USING IF-> UNLESS
TYPE1
1. If he doesn't hurry, he will be late for school
-> unless he hurry, he will be late for school
2. unless it stops raining, we won't go out
-> if it doesn't stop raining, we won't go out
3. you will get success if you are patient
- unless you aren't patient,you will get success
4. those flowers will die if nobody waters them
- unless nobody doesn't water them,those flowers will die
5. no one can help him if he doesn't tell the truth
- unless he tell the truth,no one can help him
6. you will catch a cold unless you keep your feet dry
- if you don't keep your feet dry,you won't catch a cold
7. if i don't catch the plane, i will not be home by five
- unless i catch the plane, i will not be home by five
8. if you don't apologize, i will never speak to you again
-unless you apologize, i will never speak to you again
9. unless he gives me his number, i won't phone him
- if he doesn't give me his number, i won't phone him
10. he cannot do that exercise if he doesn't learn his lessons carefully
-unless he learn his lessons carefully,he can do that exercise

15 tháng 1 2018

TYPE 2
1. unless the studied harder, he would fail the final exam
- if the didn't study harder, he would fail the final exam
2. unless the drank alcohol, he would pass the contest
- if the didn't drink alcohol, he would pass the contest
3. unless he phoned immediately, he wouldn't meet Mary
-if he didn't phone immediately, he wouldn't meet Mary
4/ if we didn't have a calculator, we couldn't work his more quickly
-unless we didn't have a calculator, we couldn't work his more quickly
5. if i weren't weak, i could walk
- unless i were weak, i could walk
6. if you weren't slow now, you could uiwn the race
- unless you were slow now, you could uiwn the race
7. if you didn't speak very quickly, the students could hear you well
- unless you spoke very quickly, the students could hear you well
8. if tom didn't invite me, i wouldn't go to the party
- unless tom invited me, i wouldn't go to the party
9. if they didn;t know his number now, they wouldn't give it to me
- unless they knew his number now, they wouldn't give it to me
10. unless he were careful, he would have serious accident
- if he weren't careful, he would have serious accident