4. are they

3. was she

2. were’t we

24. He has to save everything, _________?

A. don’t he 　　　B. does he 　　　　　C. doesn’t he　 　D. Have he　　　　

Answers to the questions:

23. He must have passed the exam, _______?

A. mustn’t he　 B. hasn’t he　　 C. has he　 D. didn’t he

22. Most of the money has been spent, ____？

A. have they 　　B. haven’t they 　　　C. has it 　　　D. hasn’t it

21. Let us have a rest, ________?

A. will you 　　　　　B. shall we　 　　　　C. do you　 　　　　D. don’t we

20. Nothing is impossible, _________?

　A. do we　 B. did we　 C. is it　 D. isn’t it

19. You’d better argue with her, _____?

　 A. didn’t you 　　　　B. don’t you 　　C. hadn’t you 　　　　D. did you

18. Your father can speak German, _____?

　A. does he　 　　　　　B. is he 　　　　C. doesn’t he　　 D. can’t he