1. They (watch) their favourite TV programmes at the moment.

They are watching their favourite Tv programmes at the moment.

2. Mary and John are neighbors. They (know) each other for a long time.

Mary and John are neighbors. They have known each other for a long time.

3. We (arrive) in New York yesterday.

We arrived in New York yesterday.

4. We (begin) to study English since 1999.

We have begun to study English since 1999.

5. My mother is tired enough (cook) tonight.

My mother is tired enough to cook tonight.

6. The teacher asked me (not make) noise in class.

My teacher asked me not to make noise in class.

7. The boys like (play) games but hate doing lessons.

The boys like playing games but hate doing lessons.

8. His doctor advised him (give) up smoking.

His doctor advised him to give up smoking.

9. Look at those black clouds. It (rain).

Look at those black clouds. It is going to rain.

10. When I was a small boy, I used (live) on a farm.

When I was a small boy, I used to live on a farm

sai đó

chọn câu:A

sai rùi

trong phép chia có số chia là 4,có thể số dư lớn nhất là 1,2,3,4