1. I told Sally how to get here, but perhaps I _______ for her.

　　A. had to write it out                B. must have written it out

　　C. should have written it out     D. ought to write it out

　　2. —There were already five people in the car but they managed to take me as well.

　　—It _______ a comfortable journey.

　　A. can’t be                                B. shouldn’t be

　　C. mustn’t have been                 D. couldn’t have been

　　3. It’s nearly seven o’clock. Jack _______ be here at any moment.

　　A. must         B. need          C. should     D. can

　　4. Johnny, you _______ play with the knife, you _______ hurt yourself.

　　A. won’t; can’t                          B. mustn’t; may

　　C. shouldn’t; must                     D. can’t; shouldn’t

　　5. The fire spread through the hotel very quickly but everyone _______ get out.

　　A. had to                B. would             C. could            D. was able to

　　6. —When can I come for the photos? I need them tomorrow afternoon.

　　—They _______ be ready by 12:00.

　　A. can                  B. should              C. might        D. need

　　7. —I stayed at a hotel while in New York.

　　—Oh, did you? You _______ with Barbara.

　　A. could have stayed                 B. could stay

　　C. would stay                            D. must have stayed

　　8. —Are you coming to Jeff’s party?

　　—I’m not sure. I _______ go to the concert instead.

　　A. must           B. would           C. should              D. might

　　9. I was really anxious about you. You _______ home without a word.

　　A. mustn’t leave                        B. shouldn’t have left

　　C. couldn’t have left                  D. needn’t leave

　　10. —Is John coming by train?

　　—He should, but he _______ not. He likes driving his car.

　　A. must         B. can         C. need          D. may

　　1. C。“ought to / should have+過去分詞”表示后悔當初該做但卻沒做某事。“…也許我本該把詳細地址寫給她的�！�

　　2. D�！癱ouldn’t have+過去分詞”表示對過去情況的推測。既然小汽車上“已有五人”，且是“設(shè)法”才把你帶去的，如此擁擠，旅途當然“不可能”舒服。

　　3. C。nearly 暗示“時間不早了”，Jack“按理應(yīng)當(should)隨時(at any moment)”都有可能到達這里。must 語氣過強；can 一般不用于肯定推測；need 意義不通，也不用于肯定句。

　　4. B。mustn’t(不許、千萬不)表示禁止。may 表示可能性。句意為“你千萬不要玩刀子，可能會弄傷自己的”。

　　5. D。表示過去具體某次“能夠”做成某事只能用 was / were able to 而不用could。

　　6. B。should 表示按理應(yīng)當，大概。can 一般不用于肯定推測；用 might 語氣太不肯定，顧客可能走掉。

　　7. A。could have done 表示本可以做但卻沒有做的事。句意為“你本來可以住在 Barbara 那兒的”；而 must have done 只表示有把握的肯定推測，這與前面具有疑問語氣的 Oh, did you?不符。

　　8. D。語境明顯提示“我可能(might)要去聽音樂會” 。

　　9. B。表示輕微的責備，句意為“我真的好擔心你啊。你當時本不該不說一聲就離開家的”。

　　10. D。由“他自己喜歡開車”這一習(xí)慣推斷，“他可能不會(may not)坐火車來”。can not“不可能”，語氣太肯定。