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

22. Can you tell me when _____back ?

A. will he be　　　 B. does he come　　 C. he will be　 D. did he come

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

　 A. by whom　　 B. for whom　 C. through which　 D. in which

20. I wonder how much ____ .　　　　　　　　　

A. does the watch cost　　 B. did the watch cost　

C. the watch costed　 D. the watch cost

19. Please find out when ____ get to Nanjing.

A. will the train B. would the train　　　 C. the train will D. the train would

18. The nurse asked them not sit ______ they were.

A. down　　　　 B. there　　　　　 C. where　　　　　　　 D. next to

17. This museum is not ______ it was ten years ago.

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

16. China isn't _____she used to be.　

A. that　　 　　　　　　 B. what 　C. where　 　　　　　 D.　 how

15. To tell you the truth, this is _____ in the world.

A. which I have　　　 B. that I have　 C. what I have　　　 D. whether I have

14. Einstein's most famous theory is ____ we call the Theory of Relativity.

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