1. We could do the test . It was very difficult (although)
=> Although the test was very difficult , we could do it

2.Tom couldn't go too school. He was ill ( so...that)
=> Tom was ill so that he couldn;t go to school

3.Solar anergy is cheap . It is also clean ( not only ... but also )
=> Solar energy is not only cheap but also clean

4. They arrived very late . They didn't see the beginning of the film (so...that)
=> They arrived very late so that they didn't see the beginning of the film

5.It was an expensive car . We couldn't afford to buy it(such)
=> It was such an expensive car that we couldn't afford to buy

6. There was few people at the meeting . It was cancelled(because)
=> The meeting was cancelled because there was few people at this

7.. We couldn't understand her because she spoke too fast (Therefore)
=> She spoke too fast,therefore we couldn;t understand her

8.I've meet too many people. I can't remember all their name (because)
=> I can't remember all their name because I've meet too many people

9. These exercise are very difficult . She can't do them (such...that)
=> These are such difficult exercise that she can't do them

10. It rained heavily . They went to school(despite)
=> Depite rainning heavily, they went to school

11. I can't go with you . I have a lot of work to do(Because of)
=> Because of having a lot of working, I can't go with you

1. We could do the test . It was very difficult (although)
Although the test was very difficult, we could do it

2.Tom couldn't go too school. He was ill ( so...that)
Tom was so ill that he couldn't go to school

3.Solar anergy is cheap . It is also clean ( not only ... but also )
Not only is solar energy cheap but it also clean

4. They arrived very late . They didn't see the beginning of the film (so...that)
They arrived so late that they didn't see the beginning of the film

5.It was an expensive car . We couldn't afford to buy it(such)
Such an expensive car ! We couldn't afford to buy it

6. There was few people at the meeting . It was cancelled(because)
It was cancelled because there was few people at the meeting

7.. We couldn't understand her because she spoke too fast (Therefore)

8.I've meet too many people. I can't remember all their name (because)
I can't remember all people name because I've met too many people

9. These exercise are very difficult . She can't do them (such...that)
It's such a difficult exercise that she can't do them

10. It rained heavily . They went to school(despite)
Despite heavy rain, they went to school

11. I can't go with you . I have a lot of work to do(Because of)
Because of doing a lot of work, I can't go with you

1 dangerous

2 polluting

3 limited

4 alternative

5 renewable 

1, dangerous

2, polluted

3, non-renewable

4, unlimited

5, available

Đáp án: A

Combine the following sentences using the given words in the brackets.
1. He drove very fast. He had an accident. (Because of)

=>Because of driving very fast,he had an accident
2. This problem is very difficult, We can't solve it now. (so)

=> This problem is very difficult, so We can't solve it now.
3. The girl is very beautiful. Her dress is red. (whose)

=>The girl is very beautiful whose dress is red.
4. She learns English well. She plays sports well, too. (not only...but also)

=>She not only learns E well,but also plays sports well
5. She is intelligent. She can do this exercise by herself. (enough)

=>she is intelligent enough to do this exercise by herself

#Fix

3. The girl is very beautiful. Her dress is red. (whose)

The girl whose dress is red is very beautiful.

4. She learns English well. She plays sports well, too. (not only...but also)

Not only does she learn English well but she also plays sports well.

Đáp án là: True.

11.These exercise are too difficult for do

12.The room is light enough for me to see everything.

13.The sound is too low for us to hear 

14.The table is too heavy for him to move

15.The car is too old for him to buy

 16. The cake is too hard for him to eat

17. The sea was too rough for the children to go swimming

 18. The restaurant is  clean enough for everyone to eat

19.The lady was too old to live there by herself.

20.The children are early enought to have good seat.

Đáp án C

infinite (adj): vô tận, không bờ bến ; limited (adj) có giới hạn, hạn chế ; indefinite (adj) không giới hạn, không rõ ràng, vô số ; boundless (adj) bao la , bát ngát

Đáp án A

Coal, oil, and natural gas supply modern civilization with most of irs power. However, not only are supplies of these fuels limited, but they are a major source of pollution. Therefore, it's important to improve, explore and develop such alternative energy sources as nuclear, water, solar and wind power. Each of these alternatives, however, has advantages and disadvantages.

Nuclear power plants efficiently produce large amounts of electricity without polluting the atmosphere; however, they are costly to build and maintain, and they create the difficult problenı of what to do with nuclear waste. Hydroelectric power is inexpensive and environmentally safe, but impractical for communities locnted far from moving water.Wind power is a pollution-free source renewable energy but it cannot be used many parts of the world where there is insufficient wind. Solar power renewable, it does not cause pollution and it does not add the earth's heat load. However, it ia dilficult to coilect and store. Solar power also requir eensive equipnent

Every source of energy has its disadvantages. One way to minimize them is to use less energy. Conservation efforts coupled with renewable energy resoucs wll ensure supplies of clean, affordable energy for humanity's future.

1. Coal, oil and natural gas .............

a. are very great in amount

c. pollute the atmosphere

b. will never be used up

d. supply most of its power

( Mk đã chú thích bằng cách in đậm key word/ sentense ở trên đoạn văn nhé.!!! )

2. Nuclear power plants

a. are difficult to build ..............

c. are very cheap to maintain

b. pollute the atmosphere

d. create the problem of nuclear waste

( Câu a,c ko đúng vì phía trên họ nói là they are costly to build and maintain : Chúng thì quá là đắt đỏ để mà xây dựng và duy trì ; còn câu c thì phía tren họ nói là without polluting the atmosphere : ko hề gây ôi nhiễm tới không khí. )

3. Wind power...............

a. cannot be used in places that has strong wind

b. is never completely used up

c. is a source of pollution

d. cannot replace itself .

( Câu này hơi khó hơn, mk phải dịch một chút Wind power is a pollution-free source renewable energy but it cannot be used many parts of the world where there is insufficient wind: Năng lượng gió là nguồn năng lượng tái tạo không ô nhiễm nhưng nó không thể được sử dụng nhiều nơi trên thế giới, những nơi mà không có đủ gió. )

4. What is the advantage of these alternatives?

a. They are environmentally friendly energy sources

b. They are non renewable forms of energy

c. They are all very practical

d. They are inexpensive to exploit

( Bn xem mấy câu mk đánh dấu trên đoạn nha trong câu đó sẽ có key words/ sentences cho đáp án nha .!!! )

5. From the passage, it can be inferred (suy ra) that to solve our energy problem...................

a. we will have to stop using many of our modern conveniences

b. scientists will have to find one major source of nonpolluting energy

c. scientists will have to find ways to increase our supplies of coal, oil, and gas

d. a combination of conservation and invention will be needed

(Cái này nằm ở đoạn cuối : Conservation efforts coupled with renewable energy resources will ensure supplies of clean, affordable energy for humanity's future : Sự nỗ lực bảo tồn cùng với các nguồn năng lượng tái tạo sẽ đảm bảo nguồn cung cấp năng lượng sạch, giá cả phù hợp cho tương lai của toàn nhân loại )

Tick cho mk nha!!!