1. We/ ought/ finish/ our homework/ before/ play/ games.
2. I/ was absent/ class yesterday because I / have/ a toothache.
3. He/ be/ hungry/ and/ so/ be/ I.
4. We/ should/ take part/ sports activities/ stay healthy.
5. I/ send/ letter/ my pen pal/ last weekend.
6. David Beckham/ play/ soccer/ skillful.
7. My father/ buy/ new bicycle/ me/ a week ago.
8. Mai/ prefer/ read books/ watch television.
9. There/ a good selection/ meat/ on the stall.
10. Last Sunday, Lan's mother/ try/ a new shirt/ but it/ not/ fit her.
11. A Frenchman/ invent/ a deep-sea diving vessel/ the early 1940s ?
12. I/ like/ watch/ program/ teenagers/ other counties.
13. The dentist/ fill/ a cavity/ my tooth/ last week.
14. She/ hope/ she/ pass/ the final test / easily.
15. Nam/ do/ the homework/ every day/ and/ so/ Nga.
16. Clean teeth/ be/ heath/ teeth.
17. Drivers/ have/ drive/ careful.
18. The number/ participants/ increase/ every week.
19. That man/ interested in/ scuba-dive/ in the sea.
20. We/ ought/ finish/ our homework/ before/ play/ sports.