39.They talked for about an hour of things and persons ____ they remembered in the school.

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

38.Mr. Herpin is one of the foreign experts who ____ in China.

　 A. works　　　　　 B. is working　　　　 C. are working　　　　 D. has been working

37.The day will come _____ the people all over the world will win liberation.

　 A. that　　　　　　 B. where　　　　　　 C. which　　　　　 D. when

36.He paid the boy $10 for washing ten windows, most of ____ hadn’t been cleaned for at least a year.

　 A. these　　　　　 B. them　　　 　　　　C. that　　　　　　 D. which

35.The radio set ___ last week has gone wrong.

　 A.I bought it　　　 B. which I bought it　　 C.I bought　　　　 D. what I bought

34.I shall never forget those years _____ I lived in the farm ____ you visited last week.

　 A. when, where　　 B. which, which　　　 C. when , which　　 D. which , where　　　　　　　　　　　　　

33.____ we all know, swimming is a very good sport.

A.　Which　　　　 B. That　　　　　　　 C. As　　　　　　 D. Who　　　　　 　　　　　　　　　　　　　　　　　　　　　　　　

32.This is the longest train _____ I have ever seen.

　 A. which　　　　　 B. that　　　　　　　 C. what　　　　　　 D. whom

31.____ have plenty of money will help their friend.

　 A. Those who　　　 B. He who　　　　 C. That who　　　　 　D. You who

30. Is this book 　　　you want to borrow from the library?

　 A. that　　　　　 B. which　　　 C. the one　　　 D. /