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I. chọn một từ đúng trong ngoặc để hoàn thành mỗi câu sau
1. This is my brother .............. name is Trung ( His / Her )
2. The boy .......... is standing near the window is my brother ( who / which )
3. Mr.Cuong has been a ....... for 5 years ( teacher / teaching )
4. She turn .......... his invitation to the party and now he's really up set ( up / down )
5. It rained hard . ..............., we didn't go to work ( therefore / However )
IV. Each sentence has a mistake find and correct it.
1. I wish I can go to the cinema with you tonight.
Can -> could
2. He asked me if I know that man over there.
Know -> knew
3. We are used to live next door to each other at one time.
To live -> living
4. Printing was invented by the Chinese.
The -> O
5. There was little traffic, so the journey didn’t take very long.
6. The number of the books in the library has risen to over five million.
Has risen -> have risen
7. If I had his phone number here, I will give it to you immediately.
Will give -> would give
8. My aunt has begun taught English for twenty years.
Taught -> to teach
9. He became interest in reading while he was working in the city library.
Interest -> interested
10. My father has retired three years ago and he is now living on his pension.
Is living -> lives
Đề 2
I. Each sentence has a mistake indentify and correct it.
1. If only we had a bigger house we can=> could invite our friends to stay.
2. It took me so many => much time to learn this lesson.
3. They listened to their teacher carefully, as=> so they understood the lesson easily.
4. The boy broke the window when he is=> was playing football with his friends.
5. Peter and John plays=> play badminton every Saturday with Maria and me.
6. She wishes he will => would stop interrupting her whenever she speaks.
7. Digital flat televisions are too expensive for we to buy at this=> that time.
8. I haven't seen my grandparents since=> for a quarter of a year
9. Your friends went to your native village last weekend, weren't=> didn't they?
10. Nam asked Mai what he can=> could do to help her.
II - Finish the second sentences so that it has the same meaning with the first one:
1. She planted that tree five years ago.
That tree....was planted five years ago .....
2. My family has someone water the roses every day.
My family has the.....roses watered everyday ............
3. He's going to have his room redecorated with some new furniture.
He's going to ask....to redecorate with some new furniture .......
4. Shall we use gas instead of burning coal?
I suggest....using has instead of burning coal.....
5. Tom failed the exam because of his laziness.
Because Tom.....was lazy, he failed the exam.......
6. I hope to see you at Christmas.
I'm.....looking forward to seeing you at Christmas ......
7. Laurence last saw his sister when she left from Japan.
Laurence 's......sister was last seen byLaurence when she left from Japan ...........
8. Do you spend two hours surfing the web every evening?
Does it .....take you two hours to surf the web every evening ?..........
9. I think it is the better to wait for the next bus.
I suggest....you should wait for the next bus .....
10. People have used the Internet all over the world.
The Internet.....has been used all over the world .....
III. Put in the correct word forms.
1. There has been a....reduction ....... (reduce) of 10% in the amount of the money available for buying the new books.
2. The alpine ......landscape .... (land) is very dramatic.
3. Women who are slimming can never enjoy a meal without being afraid of ............organization ............ (organize) their diet.
4. She always listens ............attentively ...............(attention) to what she is told.
5. He was..........informed ................. (information) of the consequences in advance.
6. The professor explained his ideas with great ............clearance............(clear)
7. The cost of the.....carriage ....... (carry) must be repaired by the buyer.
8. His health was seriously affected and he suffered from constantly.........overslept ........ (sleep).
9. In ancient Greece, the owl was a symbol of......wisdom .......... (wise)
10. The judge told him it was........irresponsible ............. (responsible) to drink and drive, and banned him for a year.
Đề 1
I. Each sentence has a mistake find and correct it.
1. I wish I can => could go to the cinema with you tonight.
2. He asked me if I know => knew that man over there.
3. We are => X used to live next door to each other at one time.
4. Printing was invented by the => X Chinese.
5. There was little traffic, so the journey didn't take very long.
6. The number of the books in the library has risen to over five million.
7. If I had his phone number here, I will => would give it to you immediately.
8. My aunt has begun => X taught English for twenty years.
9. He became interest => interested in reading while he was working in the city library.
10. My father has retired => retired three years ago and he is now living on his pension.
II. Rewrite these following sentences into conditional Sentences
1. They don't behave themselves so their parents are not happy about that.
→ If they behaved themselves, their parents would be happy about that.
2. She didn't say sorry so he was angry.
→ If she had said sorry, he woud not be angry
3. I am not a rich businessman and I can't afford to buy an expensive car.
→ If I was a rich businessman and I could afford to buy an expensive car.
4. It rained last night so I didn't go to the barbecue.
→ If it had not rained last night, I would have gone to the barbecue
5. My parents do not allow me to go, so I have to stay at home.
→ If my parrents allowed me to go, I would not stay at home
6. She doesn't pay attention to her cooking so the food is horrible.
→ If she paid attention to her cooking, the food would not be horrible
7. The weather was very nice so we didn't go camping.
→ If the weather had not been nice, we would have gone camping
8. The computer broke down and I had to stop my work.
→ If the computer had not broken down, I would not have stopped my work
9. She loves him so she forgives him easily.
→ If she didn't love him, she would not forgive him easily
10. He was angry so I didn't say anything.
→ If I had said something, he wouldn't have been angry
III - Fill in the blank space with the correct from of the words in parentheses:
1. They live happily in a small village. (Happy)
2. You should spend your money and energy as economical as possible. (Economy)
3. You can buy waste products made from this factory. (Produce)
4. This library is open to all readers (Read)
5. Air and water are necessary in our life. (Necessary)
6. My brother can repair electric appliances very well. (Apply)
7. These innovations will conserve the earth. (Innovate)
8. Since the world's energy resources are limited, we must conserve them. (Conservation)
9. We suggest replacing the light bulb. It is broken. (Replacement)
10. To keep the air unpolluted, people ought to use solar energy to create electricity. (Sun)
VI - Join each of the following pairs of sentences with "or, and, but, so or because"
1. I told a joke. Nobody laughed.
=> I told a joke but nobody laughed.
2. You must study harder. You will go into another class.
=> You must study harder or you will go into another class.
3. The city suffers from air pollution. The city suffers from water pollution.
=> The city suffer from both air and water pollution
4. I knew her family. I did what I could for her.
=> I knew her family so I did what I could for her.
5. We can't afford energy - saving light bulbs. The light bulbs are too expensive.
=> We can't afford energy-saving light bulbs because the light bulbs are too expensive.
V. Put the verbs in the right tense or form
1. If he (learn) learnt to drive, he would be able to drive his car.
2. They will lose their way if they (not have) don't have a map.
3. If the students (attend) attend Quang Trung school, they have to wear uniform.
4. Frogs and toads (die) will die a lot if people continue to use electricity to catch fish.
5. If Lan (not have) doesn't have a bicycle, she will not go camping with us.
6. His father would buy that house if it (not be) was not expensive.
7. If students do not throw plastic bags anymore, our school yard (clean) will clean.
8. I would do the test in five minutes if it (not be) was not difficult.
VI. Complete the sentence with the one word given below. One word can be used for more than one sentence: for/ up/ after/ on/ off/ away/ in.
1. Who's going to look after the children while you're away?
2. "Turn on the TV for me, will you? I want to watch the cartoon.
3. She's looked for her keys everywhere.
4. Turn off the radio. I'm working.
5. If we go on littering, the environment will become seriously polluted.
6. Don't throw these newspapers away.
7. Could you fill in this form?
8. Don't wake the baby up . Let him sleep.
9. Don't believe her. She's just made up the story.
10. Susan took off her coat and put it on the sofa.
VII. Fill in the blanks with proper words, then answer the following questions.
power - effective - nuclear - advanced - pollution
heat - stored - electricity - energy - panels
Are you looking for a cheap, clean, (1) effective source of power that doesn't cause (2) pollution or waste natural resources? Look no further than solar (3) energy from our Sun.
At present, most of our (4) electricity comes from the use of coal and gas, oil or (5) nuclear power. This power could be provided by the Sun. one percent of the solar energy that reaches the Earth is enough to provide (6) power for the total population.
Many countries are already using solar energy. Solar (7) pannels are placed on the roofs of a house and the Sun's energy is used to (8) water. The energy can be (9)stored for a number of days, so on cloudy days you can use solar energy, too.
Sweden has an (10) advanced solar energy program. There, all buildings will be heated by solar energy and cars will use solar power instead of gas by the year 2015.
1) Is the solar energy an efficient source of power?
=> Yes, it is
2) Where are the solar panels placed?
=> Solar panels are placed on the roof of a house
3) How long can the energy be stored?
=> The energy can be stored for a number of days
4) Is the solar energy used in Vietnam now?
=> Yes, it is
Đề 2
I. Each sentence has a mistake indentify and correct it.
1. If only we had a bigger house we can => could invite our friends to stay.
2. It took me so many => much time to learn this lesson.
3. They listened to their teacher carefully, as => so they understood the lesson easily.
4. The boy broke the window when he is => was playing football with his friends.
5. Peter and John plays => play badminton every Saturday with Maria and me.
6. She wishes he will => would stop interrupting her whenever she speaks.
7. Digital flat televisions are => is too expensive for we to buy at this time.
8. I haven't seen my grandparents since => for a quarter of a year
9. Your friends went to your native village last weekend, weren't => didn't they?
10. Nam asked Mai what he can => could do to help her.
II - Finish the second sentences so that it has the same meaning with the first one:
1. She planted that tree five years ago.
That tree was plated 5 years ago
2. My family has someone water the roses every day.
My family has the roses watered every day
3. He's going to have his room redecorated with some new furniture.
He's going to ask somebody for redecorating his room with some new furniture
4. Shall we use gas instead of burning coal?
I suggest using gas instead of burning coal
5. Tom failed the exam because of his laziness.
Because Tom was lazy, he failed the exam
6. I hope to see you at Christmas.
I'm looking forward to seeing you at Christmas
7. Laurence last saw his sister when she left from Japan.
Laurence 's not seen his sister since she left from Japan
8. Do you spend two hours surfing the web every evening?
Does it take you two hours to surf the web every evening?
9. I think it is the better to wait for the next bus.
I suggest waitting for the next bus
10. People have used the Internet all over the world.
The Internet has been used all over the world
III. Put in the correct word forms.
1. There has been a reduction (reduce) of 10% in the amount of the money available for buying the new books.
2. The alpine landing (land) is very dramatic.
3. Women who are slimming can never enjoy a meal without being afraid of organizing (organize) their diet.
4. She always listens attentionly (attention) to what she is told.
5. He was infomative (information) of the consequences in advance.
6. The professor explained his ideas with great clearly(clear)
7. The cost of the carriage (carry) must be repaired by the buyer.
8. His health was seriously affected and he suffered from constantly sleeping(sleep).
9. In ancient Greece, the owl was a symbol of wisdom (wise)
10. The judge told him it was irreponsible (responsible) to drink and drive, and banned him for a year.
#trannguyenbaoquyen
Đề 1
I. Each sentence has a mistake find and correct it.
1. I wish I can => could go to the cinema with you tonight.
2. He asked me if I know => knew that man over there.
3. We are used to live => living next door to each other at one time.
4. Printing was invented by the Chinese => Chinese.
5. There was little traffic, so the journey didn't take very long. (câu này đúng rồi nha )
6. The number of the books in the library has risen => have been risen to over five million.
7. If I had his phone number here, I will => would give it to you immediately.
8. My aunt has begun taught => taught English for twenty years.
9. He became interest => interested in reading while he was working in the city library.
10. My father has retired => retired three years ago and he is now living on his pension.
II. Rewrite these following sentences into conditional Sentences
1. They don't behave themselves so their parents are not happy about that.
→ If ............they behaved themselves , their parents would be happy about that
2. She didn't say sorry so he was angry.
→ If ...........she had said sorry , he wouldn't have been angry
3. I am not a rich businessman and I can't afford to buy an expensive car.
→ If ........I were a rich businessman , I could afford to buy an expensive car
4. It rained last night so I didn't go to the barbecue.
→ If ..........it hasn't rained last night , I would have gone to the barbecue
5. My parents do not allow me to go, so I have to stay at home.
→ If ......my parents allowed me to go , I wouldn't have to stay at home
6. She doesn't pay attention to her cooking so the food is horrible.
→ If .......she paid attention to her cooking , the food wouldn't be horrible.
7. The weather wasn't very nice so we didn't go camping.
→ If ....the weather had been very nice , we would have gone camping
8. The computer broke down and I had to stop my work.
→ If .......the computer hadn't broken down , I wouldn't have stopped my work
9. She loves him so she forgives him easily.
→ If .............she didn't love him , she wouldn't forgive him easily
10. He was angry so I didn't say anything.
→ If ........he hadn't been angry , I would have said anything
III - Fill in the blank space with the correct from of the words in parentheses:
1. They live........happily....... in a small village. (Happy)
2. You should spend your money and energy as......economy..... as possible. (Economy)
3. You can buy waste.....product... made from this factory. (Produce)
4. This library is open to all........readers....... (Read)
5. Air and water are......necessary...... in our life. (Necessary)
6. My brother can repair electric.....appliances..... very well. (Apply)
7. These......innovations.... will conserve the earth. (Innovate)
8. Since the world's energy resources are limited, we must..conserve... them. (Conservation)
9. We suggest....replacing..... the light bulb. It is broken. (Replacement)
10. To keep the air unpolluted, people ought to use.......solar... energy to create electricity. (Sun)
VI - Join each of the following pairs of sentences with "or, and, but, so or because"
1. I told a joke. Nobody laughed.
=> I told a joke but nobody laughed.
2. You must study harder. You will go into another class.
=> You must study harder or you will go into another class.
3. The city suffers from air pollution. The city suffers from water pollution.
=> The city suffers from air pollution and the city suffers from water pollution.
4. I knew her family. I did what I could for her.
=> I knew her family and I did what I could for her.
5. We can't afford energy - saving light bulbs. The light bulbs are too expensive.
=> We can't afford energy - saving light bulbs because the light bulbs are too expensive.
V. Put the verbs in the right tense or form
1. If he (learn) ____learnt___ to drive, he would be able to drive his car.
2. They will lose their way if they (not have) _don't have___ a map.
3. If the students (attend) _attends_ Quang Trung school, they have to wear uniform.
4. Frogs and toads (die) _will die__ a lot if people continue to use electricity to catch fish.
5. If Lan (not have) _doesn't have___ a bicycle, she will not go camping with us.
6. His father would buy that house if it (not be) _weren't_ expensive.
7. If students do not throw plastic bags anymore, our school yard (clean) _won't be cleaned__.
8. I would do the test in five minutes if it (not be) _weren't difficult.
VI. Complete the sentence with the one word given below. One word can be used for more than one sentence: for/ up/ after/ on/ off/ away/ in.
1. Who's going to look __after____ the children while you're away?
2. "Turn ___on___ the TV for me, will you? I want to watch the cartoon.
3. She's looked ____for__ her keys everywhere.
4. Turn ___off___ the radio. I'm working.
5. If we go __on____ littering, the environment will become seriously polluted.
6. Don't throw these newspapers ___away___.
7. Could you fill __in____ this form?
8. Don't wake the baby __up____. Let him sleep.
9. Don't believe her. She's just made __up____ the story.
10. Susan took __of____ her coat and put it on the sofa.
1. They decided to go out. It rained heavily. (Although)
-->They decided to go out although it rained heavily.
2. Why don't we go to school by bike instead of motorbike to save energy ? ( I suggest )
-->I suggest going to school by bike instead of motorbike to save energy.
3. He can't buy that bike because he doesn't have enough money (If )
-->If he had enough money, He could buy that bike.
4.The flowers are rose. I bought them for my mother ( which )
-->The flowers which I bought them for my mother are rose.
5. The boy is standing near the tree. He is my brother. ( who )
-->The boy who is standing near the tree is my brother.
6. I don't think he is strong. He can't lift the box.
-->I don't think he is strong because he can't lift the box.
7.His house is big. It is not very far from here.
-->His house is big and it is not very far from here.
8. You must plant your work carefully.
-->You work must be planted carefully.
9. I am very busy. I can't go with you
-->If I wasn't very busy, I could go with you.
Rewrite the following sentence by using Because + clause, Because + N/ cụm N :
1. He is bad at English because he is very lazy.
=> He is bad at English because of his laziness.
2. He didn't come to class because of his illness.
=> He didn't come to class because he was ill.
3. Everyone likes and admires her because of her intelligence.
=> Everyone likes and admires her because she is intelligent.
4. The flight 202 was delayed because the weather was bad.
=> The flight 202 was delayed because of the bad weather.
5. I didn't come on time because it rained heavily.
=> I didn't come on time because of the heavy rain.
6. They can't miss the meeting because of its importance.
=> They can't miss the meeting because it is important.
7. I was late for the meeting because the traffic was heavy.
=> I was late for the meeting because of the heavy traffic.
8. My grandmother can't work hard because of her age.
=> My grandmother can't work hard because she is old.
I. Use the correct tense or word forms :
- I look forward to (see)........................seeing.................. you.
- We suggest (run)......................running...................... around the park.
- She asked me when my school vacation (start).....................started.........................
- He (work).....................has worked/ has been working.............. here for many years .
- If we go on (litter).......littering......., the environment (become) ..........will become........... serious poluted.
- I suggest that you should (reuse)............ ……reuse………your bag.
- We suggest that buses should (use).........................be used.......................widely.
- You (buy)............ .......bought........……….a new car, didn’t you?
- They (learn) ............. ……have learnt.....................…….since 2001.
10. Air (pollute)............................pollution........................... can make people ill.
IV/ Put the verbs in brackets into the correct form.
1.Tommy (watch) ........................was watching.......................TV when the phone rang.
2. I (not hear)...........................haven't heard...................... of him since we last met.
3.What a pity! He goes to bed so late. I wish he (not go)...................didn't go.................. to bed so late.
4. They (not eat) ................haven't eaten...................... that food before.
5. It is better if the litter (put) ............. …is put………….... on the bins.
1. she planted that tree five years ago
that tree was planted five years ago.
2. my family has someone water the rose everyday
my family has the rose watered everyday.
3. he's going to have his room redecorated with some new furniture
he's going to ask someone to redecorate his room with some new furniture.
4. shall we use gas instead of burning coal?
i suggest using gas instead of burning coal
5. tom failed the exam because of his laziness
because tom was lazy, he failed the exam.
6.unless we reduce the use of water and electricity, we'll have to pay more thia month
if we don't reduce the use of water and electricity, we will have to pay more this month.
7. lan is a better cook than hoa
hoa can't cook as well as Lan can.
8. nam's motorbike was washed carefully
nam washed his motorbike carefully.
9. my sister is good enough to pass the final exam
my sister is so good that she passes the final exam.
10. To make friends in the new school is not easy for a new student
it's not easy for a new student to make friends in the new school.
1. she planted that tree five years ago
that tree was planted five years ago.
2. my family has someone water the rose everyday
my family has the rose watered everyday.
3. he's going to have his room redecorated with some new furniture
he's going to ask someone to redecorate his room with some new furniture.
4. shall we use gas instead of burning coal?
i suggest using gas instead of burning coal
5. tom failed the exam because of his laziness
because tom was lazy, he failed the exam.
6.unless we reduce the use of water and electricity, we'll have to pay more thia month
if we don't reduce the use of water and electricity, we will have to pay more this month.
7. lan is a better cook than hoa
hoa can't cook as well as Lan can.
8. nam's motorbike was washed carefully
nam washed his motorbike carefully.
9. my sister is good enough to pass the final exam
my sister is so good that she passes the final exam.
10. To make friends in the new school is not easy for a new student
it's not easy for a new student to make friends in the new school.
III
1. we are going to organize a meeting of local _conservation__ next week. (conserve)
2. the government wants to reduce tobacco _consuming__ by 40%. (consume)
3. some __consumers__ want more information about the food they buy. (consume)
4. Many household ___application_ are expensive for us to buy. (apply)
5. These _innovation___ will conserve the earth's resources. (innovate)
6. There have been recent __innovated_ in steel-making technology. (innovate)
7. ___Ultimately_____, you'll have to make the decision yourself. (ultimate)
8. I would like to make a __suggestion___. (suggest)
9. In the future, many building will be __heated___ by solae energy. (hot)
10. he is one of the most famous _environmentalists___ in the world. (environment)
11. I'm very _worried___ because they use electricity to catch fish. (worry)
12. I want to see the __protection__ of environment from the local authority. (protect)
13. If we go on littering, the environment will become __seriously__ polluted. (serious)
14. there is a _dripping__ faucet in your kitchen. (drip)
15. we can protect the environment by _reducing__ air pollution. ( reduction)
16. people need to increase their daily _consuming__ of fruit and vegetables. (consume)
17. the tablets work more _effectively__ if you take a hot drink after them. (efficient)
18. Nowadays, the consimers want the products that work ___ and save money. (effect)
IV
1. Phong didn't feel well (or/and/but/so/because/however/therefore) he didn't go to work.
2. please turn down the radio (or/and/but/so/because/however/therefore) I want to be able to get to sleep.
3. It rained very hard (or/and/but/so/because/however/therefore) he went out without a raincoat.
4. please try to speak nore slowly (or/and/but/so/because/however/therefore) please try to speak more clearly.
5.john couldn't pick us up for the concert (or/and/but/so/because/however/therefore) his car would't start
1. (Because of)=> because it rained (heavily), we (didn't go) to (her) birthday party.
2. (Hoa's) family has (moved) to this city (for)=> since (last month).
3. (Thanks for)=> Thanks to TV, people can enjoy (interesting) programs in an (inexpensive) and (convenient) way.
4. I (like) to go (to) the countryside (and) my little sister does, (either)=> too .
5. The town we visited (was) a (four-days)=> four-day journey from our hotel, so we (took) the train instead (of the) bus.
6. Is (there) (something)=> anything (in) the (clothes basket) ?
7. This exercise is (much) (more earsier)=> easier (than) (the others).
8. (The) majority (to the)=> of the news is (about) (violence) and scandal.
9. (That) doctor (is)=> has been visited (the) patient (since) 5pm.
10. (When)=> On our vacation, we (plan) to spend (three days) scuba (diving).
11. Some of the people (were standing) in the street (watched)=> watching the parade, (while) others (were singing) songs.
12. Stuart stopped (to write)=> writing his letter (because) he had to (leave) (for the hospital).
13. The (girl) (which)=> whom I met (at) the party last night is (from England).
14. They (have) (such a good meal) (at that restaurant) that they wanted (to go there)=> to go to there again.
15. We'd better (to review)=> review this lesson (carefully) because we (will have) some questions on (it).
1. (Because of) it rained (heavily), we (didn't go) to (her) birthday party.
Lỗi sai:Because of=>Because
2. (Hoa's) family has (moved) to this city (for) (last month).
Lỗi sai:for=>since
3. (Thanks for) TV, people can enjoy (interesting) programs in an (inexpensive) and (convenient) way.
Lỗi sai:Thanks for=>Thanks to
4. I (like) to go (to) the countryside (and) my little sister does, (either).
Lỗi sai:either=>too
5. The town we visited (was) a (four-days) journey from our hotel, so we (took) the train instead (of the) bus.
Lỗi sai:four-days=>four-day
6. Is (there) (something) (in) the (clothes basket) ?
Lỗi sai:something=>anything
7. This exercise is (much) (more earsier) (than) (the others).
Lỗi sai:more earsier=>easier
8. (The) majority (to the) news is (about) (violence) and scandal.
Lỗi sai:to the=>for the(câu này k chắc lắm,mình thấy nó đúng rồi)
9. (That) doctor (is) visited (the) patient (since) 5pm.
Lỗi sai:is=>has
10. (When) our vacation, we (plan) to spend (three days) scuba (diving).
Lỗi sai:When=>During
11. Some of the people (were standing) in the street (watched) the parade, (while) others (were singing) songs.
Lỗi sai:watched=>watching
12. Stuart stopped (to write) his letter (because) he had to (leave) (for the hospital).
Lỗi sai:to write=>writing
13. The (girl) (which) I met (at) the party last night is (from England).
Lỗi sai:which=>who
14. They (have) (such a good meal) (at that restaurant) that they wanted (to go there) again.
15. We'd better (to review) this lesson (carefully) because we (will have) some questions on (it).
Lỗi sai:to review=>review
III. Chọn một từ đúng trong ngoặc để hoàn thành mỗi câu sau.
1. We love ____our___ school because of its ancient beauty. (our/us)
2. He has worked as a singer ____for___ 5 years. (since/for)
3. The boy ___who____ is sitting over there is my son. (who/which)
4. I can cook ___better____ than my sister. (better/best)
5. Nam had a serious accident because he didn't drive ___carefully____. (careful/carefully)
6. ____solar___ energy can be cheap and clean. (Sun/Solar)
7. It rained hard. ____therefore___, we didn't go to work. (Therefore/However)
III. Chọn một từ đúng trong ngoặc để hoàn thành mỗi câu sau.
1. We love _______ school because of its ancient beauty. (our/us)
2. He has worked as a singer _______ 5 years. (since/for)
3. The boy _______ is sitting over there is my son. (who/which)
4. I can cook _______ than my sister. (better/best)
5. Nam had a serious accident because he didn't drive _______. (careful/carefully)
6. _______ energy can be cheap and clean. (Sun/Solar)
7. It rained hard. _______, we didn't go to work. (Therefore/However)