21. Can you tell me ?

　　A. who are you B. who you are

　　C. you are who D. who you be

　　22. Do you know of the three?

　　A. which book she likes best

　　B. which best book does she like

　　C. that which book she likes best

　　D. which book she best likes

　　23. I hear the teacher will come back from the UK soon.

　　A. which B. that C. when D. whether

　　24. Can you tell me language she speaks?

　　A. which B. what C. that D. whether

　　25. Can you tell us you grow cotton in your country?

　　A. that B. whether C. which D. whose

　　26. I don’t understand you said.

　　A. when B. that C. where D. what

　　27. Do you know the meeting will begin?

　　A. when B. that C. where D. what

　　28. Can you tell me the meeting will begin?

　　A. what B. whether C. when D. where

　　29. surprised me most was he didn’t go to school yesterday.

　　A. What, how B. What, that C. That, that D. Whom, that

　　30. I wondered they had been to America.

　　A. if B. what C. who D. that

　　31. Can you tell me Mr. Green lives in Room 2318?

　　A. that B. where C. until D. if

　　32. Do you know Jack left so early?

　　A. what B. why C. until D. though

　　33. They will be thankful for you have done.

　　A. what B. that C. which D. who

　　34. The boy asked how far the moon from the earth.

　　A. was B. were C. is D. was

　　35. I told them that the sun in the east.

　　A. rises B. rose C. has risten D. was rising

　　36. You must remember the train .

　　A. that, leaves B. when, leaves

　　C. when, will leave D. if, leave

　　37. Do you know she will go to the cinema with us?

　　A. if B. where C. who D. which

　　38. The children said they themselves very much.

　　A. if, enjoy B. why, enjoyed

　　C. where, enjoy D. that，enjoyed

　　39. I don’t think I out the problem.

　　A. if, can work B. how, will work

　　C. that, can work D. when, will work

　　40. She is afraid he a cold at night.

　　A. that, will catch B. that, catches

　　C. whether, will catch D. is, catches