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