1. They haven't visited me for five years

2. Before Mike went to be, he had turned off the light

3. It is three months since I visited the museum

4. John has played the piano for 10 years

5, I haven't seen her for a week

6. It's a month since my father last smoked cigarettes

7. It is five years ago since my father bought this car

8. It's years since I enjoyed myself so much

9. We haven't been to the cinema for a long time

10. I haven't seen Rose for three years

=>
1. They haven't visited me for five years. (chuyển QKĐ sang HTHT have/has V3/ed, for + khoảng time)
2. Before Mike went to bed, he had turned off the light. (Before QKĐ, QKHT)
3. I didn't visit the museum three months ago./ It is three months since I visited the museum.

4. B (chuyển QKĐ sang HTHT have/has V3/ed, for + khoảng time)
5. A (for + khoảng time)
6. It's a month since my father last smoked cigarettes.

7. Mr.Brown has had this car for five years.
8. It's years since I enjoyed myself so much. (It's time since QKĐ)

9. We haven't been to the cinema for a long time.
10. I haven't seen Rose for three years.