Sure! Here are the rewritten sentences:

### I. Rewrite the sentences:
1. It hasn’t rained for three months.
- The last time it rained was three months ago.

2. I haven’t visited my sick friend in the hospital for four days.
- The last time I visited my sick friend in the hospital was four days ago.

3. My son hasn’t lied to me since he was punished for it.
- The last time my son lied to me was when he was punished for it.

4. She hasn’t worn that ring since her birthday party.
- She last wore that ring at her birthday party.

5. They haven’t mentioned that subject since last week.
- The last time they mentioned that subject was last week.

6. How long have you been training to be a ballet dancer?
- When did you start training to be a ballet dancer?

7. I haven’t heard from him for ages.
- The last time I heard from him was ages ago.

8. The last time I went to the beach was about two years ago.
- It’s been about two years since I last went to the beach.

9. I last went to London one year ago.
- It’s been one year since I last went to London.

10. We haven’t corresponded with them for seven years.
- It’s been seven years since we last corresponded with them.

### II. Rewrite the sentences:
1. She started working as a secretary 8 years ago.
- She has been working as a secretary for 8 years.

2. My sister began to study English a year ago.
- My sister has been studying English for a year.

3. It’s about four years since I last went to the beach.
- I haven’t been to the beach for about four years.

4. I last moved to this street three months ago.
- I have lived on this street for three months.