Dưới đây là cách hoàn chỉnh các câu dựa vào từ cho trước:

1. **They last (go)**: They last went to the beach in 2021.

2. **It is a long time since I last received Lan’s letter.**: I haven’t received Lan’s letter for a long time.

3. **She last came to my office one years ago.**: She hasn’t come to my office for a year.

4. **She (come not)**: She hasn’t come to visit me since last summer.

5. **I haven’t seen my aunt for 2 years.**: The last time I saw my aunt was 2 years ago.

**Ex 10: Rewrite the sentences using used to or didn’t use to:**

1. My father gave up smoking three years ago.
**My father used to smoke.**

2. Linda was my best friend, but we aren’t friends any longer.
**Linda used to be my best friend.**

3. My sister grew roses but she doesn’t any more.
**My sister used to grow roses.**

Hy vọng điều này sẽ giúp ích cho bạn!