21. I think I’ll wait until the mail__________

A. should come

B. is coming

C. comes

D. will come

22. We could have bought a new are last year, but we really__________it.

A. can’t afford

B. couldn’t afford

C. won’t afford

D. unable to afford

23. If you don’t pay your taxes ,they__________.

A. have you arrested （逮捕）

B. will have you arrested

C. must have you arrested

D. have you arrest

24. I__________meeting you ever since we parted.

A. was looking forward to

B. have been looking forward to

C. had been looking forward to

D. looked forward to

25. They told me that by the end of the month they__________in this flat for 12 years.

A. has lived

B. will have lived

C. has been living

D. would have been living

参考答案：CDDDB BBBBD CBCCB AADDA CBBBD

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