7. The purpose of the activity is (improve) the friendship between two teams.

6. If you (not study) hard,you’ll fail the exam.

5. It is rude (ask) a woman her age in western countries.

4. If you want to know whether the answer is right,I can (check) it for you.

3. Mary bought a nice dress last week. The dress (cost) her ninety dollars.

2.  (2015 •临开) It’s (polite) to stare at anyone or to talk loudly in public.

1. I think you’d better practise (speak) English every day.

10. Mr Chen p away his chair and stood up.

9. When you ask the way in the street,say e me first.

8. The child is too young. He is (不能够) to finish the work by himself.