20. This is the school ____ we visited three days ago.

　　　 A. where　　　　　　　 B. /　　　　　　　　　　　 C. when　　　　　　　　 D. what

19. I know only a little about this matter; you may ask ____ knows better than I.

　　　 A. whoever　　　　　　 B. whomever　　　　 C. anyone　　　　　　　 D. the one

18. This is the very letter ____came last night.

　　　 A. who　　　　　　　　　 B. which　　　　　　　 C. that　　　　　　　　　 D. as

17. The foreign guests, ____ were government officials, were warmly welcomed at the airport.

　　　 A. most of them　　 B. most of that　　　　　　　 C. most of whom　 D. most of those

16. Finally, the thief handed over everything ____ he had stolen to the police.

　　　 A. that 　　　　　　　　 B. which 　　　　　　　　　　 C. whatever　　　　　 D. all

15. Have you read the book ____ I lent to you?

　　　 A. that　　　　　　　　　 B. whom　　　　　　　 C. when　　　　　　　　 D. whose

14. In fact the Swede did not understand the three questions ____ were asked in French.

　　　 A. where　　　　　　　 B. who　　　　　　　　　 C. in which　　　　　　 D. which

13. He talked about a hero ____ no one had ever heard.

　　　 A. of whom　　　　　 B. from whom　　　　　　　 C. about that　　　　　 D. who

12. The man ____ around our school is from America.

　　　 A. which you showed　　 B. you showed him　　　　 C. you showed　　　　　　　 D. where you showed

11. The doctor ____ is leaving for Africa next month.

　　　 A. the nurse is talking to him　　　　　　　 B. whom the nurse is talking

　　　 C. the nurse is talking to　　　　　　　　　　　　　　 D. who the nurse is talking