### Viết lại câu sao cho nghĩa không đổi

1. We have learned English for 10 years.
- We started learning English 10 years ago.
2. It has been a long time since we last met.
- We last met a long time ago.
3. Ms. Ann hasn't taken part in any voluntary programs for 4 years.
- Ms. Ann last took part in a voluntary program 4 years ago.
4. I haven't met my family since last Christmas.
- The last time I met my family was last Christmas.
5. How long have you lived here?
- When did you start living here?
6. The volunteers have provided free food and fresh water to homeless people since yesterday.
- The volunteers started providing free food and fresh water to homeless people yesterday.
7. The doctor has quitted his job in the local hospital and moved to the central hospital for 2 days.
- The doctor quit his job in the local hospital and moved to the central hospital 2 days ago.
8. The children haven't had a long vacation since last year.
- The last time the children had a long vacation was last year.
9. They haven't visited their parents for 3 months.
- The last time they visited their parents was 3 months ago.
10. It has been 2 years since we broke up.
- We broke up 2 years ago.

### Chia động từ trong ngoặc về thì quá khứ đơn hoặc hiện tại hoàn thành

1. Last month our class **went** on a field trip with our teacher. We **haven't had** another field trip since then.
2. I **used to live** with my grandmother until I **was** 18. Since then, I **haven't seen** my grandmother again.
3. My mother **worked** as a teacher in the local high school for 20 years before her retirement.
4. The last time we **had** dinner together was 2 weeks ago.
5. My uncle **hasn't met** his family since he **went** on a business trip last month.
6. Your friend Sarah **just phoned** you. She **said** she **was** sorry because she **couldn't come** to your party.
7. So far, I **have already read** 11 different books. My most favourite book is "Paper Towns" by John Green. I **finished** reading it last weekend.
8. Last night I **didn't feel** well, so my father **took** me to the hospital. I **haven't been** out of the hospital yet.

### Khoanh tròn đáp án đúng

It was a sunny day when I first involved in community service. I led a group of more than 20 students to do voluntary work in a school of disabled children. Soon after we came there, the leader divided us into several teams with different duties. My job was to play with the children then.