23. There is a pen on the desk, ____? A. isn’t it　 B. isn’t there　 C. is that D. isn’t that

22. Every one of us is fond of sports, ____? A. is he　 B. isn’t he 　　 C. are we D. aren’t we

21. Few of us have studied German, ____? A. have we B. have they　 C. haven’t we D. don’t they

20. Few mistakes have been made in his composition, ____?

　　　 A. haven’t they　　　 B. have they　　　　　 C. don’t 　　　　　　　 D. aren’t they

19. None of them is (are) interested in it , ____? A. is he　 B. isn’t he　 C. are they D. aren’t they

18. Each of us doesn’t have a book, ___? A. haven’t they B. don’t we C. haven’t we D. hasn’t he

17. Each has a Chinese bock, ____? A. has he　 B. doesn’t he　　 C. does he 　　 D. don’t they

16. One of us is from Hunan, ____? A. is he　 B. isn’t one　　　　 C. are we　　　　 D. aren’t we

15. One should do one’ s best, ____?

　　　 A. can you　　　　　　 B. should you　　　　 C. shouldn’t you　　 D. should not one

14. Sit down here, ____? A. will you　 B. do you　　　　　　　 C. can you　　　 D. shall we