1. He (work).....is working....................in the office now.

2. My friend(enjoy)......enjoy.................hamburgers very much.

3. The students(look) ..........are looking.................up these new words right now.

4. We always (do)...do............English exercises carefully.

5. The sun (rise)......rises..................in the east.

6. They (talk).....are talking......................to John at the moment.

7. he children(sleep).....sleep.......................well for two hours every afternoon.

8. My sister(need)...needs........................some money for books.

9. It(rain)......rains.....................very much in the United States.

10. Linda(write)........writes................to David at this time.

11.Thu (not have)......doesn't     have.....................any apples. She (have)......has..............some oranges.

12. Minh (watch)........watches...........TV every night.He (watch).......is watching.................TV at present.

13. We often(swim)......swims...............in the river, but today we (go).....are going..................fishing.

14. They usually(play)......plays............tennis. They(play)..are playing........................tennis at the moment.

15. Nam(ride).....rides.............his bike to school everyday, but today he(walk)....is walking........to school.

16. Almost everyone(work)......works............very hard.

17. This book(belong).........belongs...............to me.

18. My brother often(see)......see.............you and your sister at the supermarket.

19. Mr Brown(teach) .......is teaching............us English.

20. Please quiet! The baby(sleep).............................