5. There used to be some trees in the field, but now there aren't any

6. He used to be a poor man

7. There didn't use to be much traffic when I was small

8. My uncle used to be a bus driver some years ago, but now he has a desk job

Ex4

1. A

2. D

3. B

4. A

5. B

6. D

7. A

8. C

Ex5

1. B

2. B

3. D

4. A

5. A

6. B

Ex6

1. second

2. useful

3. lovely

4. wonderful

5. pleasant

6-7. guitarist - pianist

8-9. cyclist - motorcyclist.

Đáp án:

 

Giải thích các bước giải:

 Ex4:1-a, 2-b ,3-a, 4-c, 5-d, 6-d , 7-a, 8-c

Ex5: 1-b, 2-a, 3-a, 4-c ,5-a, 6-d

Ex6: 1-Two, 2-Used, 3-Loved, 4-Woder, 5-Please, 6, 7- Guitars/ piano, 8,9- Cycles/motor