Ex1: Chia động từ trong ngoặc ở thì thích hợp :
1. He often .........goes.......... (go) to school on foot.
2. It ........will rain...........(rain) very hard now.
3. The sun .........warms..........(warm) the air and ........gives...........(give) us light.
4. Look! A man ..........is running.........(run) after the train.
5. She ........goes...........(go) to school everyday.
6. Bad students never ..........work.........(work) hard.
7. It often ..........rains.........(rain) in the summer. It ........will rain...........(rain) now.
8. The teacher always ...........points........(point) at the black – board when he .........wants..........(want) to explain something.
9. Mother .........is cooking..........(cook) some food in the kitchen at the moment, she always ..........cooks.........(cook) in the morning.
10. I always .......meet............(meet) him on the corner of this street.
11. Where are you ..........going..........(go) now? – I ........am going...........(go) to the theater.
12. He .........doesn't..........(not do) morning exercises regularly.
13. Is he ....................doing....................(do) morning exercises now?
14. Water .........boils..........(boil) at 100 degrees centigrade.
15. He .........will meet........ (meet) the dentist next week.
16. Are You......... .................(be) a good student?
17. They ....don't.... usually ......go....... (not go) to school by motorbike.
18. He ......is swimming......... (swim) overthere now.
19. She ........will come.........(come) here next month.
20. They .........aren't........... (not be) doctors.