21.Could you tell me ____ you have bought this fur coat?

　　A. by whom B. for whom

　　C. through which D. in which

　　22. Can you tell me when _____back ?

　　A. will he be B. does he come

　　C. he will be D. did he come

　　23. Nobody but Jim and his uncle _____.

　　A. know who is he

　　B. know who he is

　　C. knows who is he

　　D. knows who he is

　　24. I didn't know what _____.

　　A. was the matter

　　B. is the matter

　　C. matter was

　　D. the matter is

　　25. We have plenty of books here. You may take _____ you like most.

　　A. in which B. from which

　　C. whichever D. that

　　26. It depends on ______ we have enough time.

　　A. if B. weather

　　C. if or not D. whether

　　27. I am not quite sure ____ he will come or not ?

　　A. when B. what time

　　C. weather D. whether

　　28. You have no idea_______ for her safety.

　　A. how anxious I have been

　　B. so anxious I have been

　　C. how I have been anxious

　　D. I have been so anxious

　　29. Now we can see _____ problem the population is .

　　A. a what serious

　　B. such serious a

　　C. how serious a

　　D. so a serious

　　30. Would you please tell me ______ to the railway station ?

　　A. how far is it

　　B. how far it is

　　C. how far off is it

　　D. how long it is

　　31. I want to buy some stamps. Can you tell me _____ near here ?

　　A. if there's a post office

　　B. is there a post office

　　C. where is the post office

　　D. whether is there a post office

　　32. What we have seen is different from _______.

　　A. we heard

　　B. we have heard

　　C. what we heard

　　D. what we have heard

　　33. Why is Li Ming so late? I don't know ______.

　　A. can what the reason be

　　B. what the reason can be

　　C. the reason what can be

　　D. what can the reason be

　　34. I couldn't agree with _____ at the meeting.

　　A. that you said

　　B. which you said

　　C. all what you said

　　D. what you said

　　35. Can't you find out _______ wrong with the machine ?

　　A. which B. that's C. what's D. where is

　　36. Do you know _______.

　　A. who let out the dog

　　B. who the dog let out

　　C. who did the dog let out

　　D. whom the dog let out

　　37. ______ you go or stay at home won't make any difference.

　　A. If B. When C. That D. Whether

　　38. Is _____ you told me really true ?

　　A. what B. which C. that D. when

　　39. It's well known ______ the earth moves round the sun.

　　A. when B. why C. what D. that

　　40. ____he doesn't like them is very clear.

　　A. What B. That C. Which D. Where