20. "Have you found the pen you lost yesterday ?"

A. one B. the one　 C. one's　　　 D. it

19. If you need money,I'll lend you ____ .

A. one B. it　　　　 C. those　　　 D. some.

18. Is this your coat? No, mine is ____.

A. one blue　　　　　　　　　　　 B. a blue one

17. Have you got any apples? Yes, I've got ____ .

A. a small　　　　 B. some small　 C. two small ones D. two small

16. Have you any books on cooking? I'd like to borrow ____ .

A. it　 B. that　　　 C. this　　　　 D. one

15. Everyone should be careful of ____ pronunciation.

A. their　　　　　 B. ones　　　　 C. our　　　 D. his

14. One of the students hasn't prepared ____ lessons very well.

A. one's　　　　　 B. ones　　　　 C. their　　 D. his

13. ____ can always try to do a little better than ____ best.

A. One, you　　　　 B. One, one　　 C. One, his　 D. One, one's

12. I asked her if she know ____ .

A. all them　　　　 B. them all　　 C. them of all D. every them

11. She has four daughters. One is a doctor, but ____ are workers.

A. another　　　　 B. other　　　 C. the others D. the other