【跟蹤訓練】

1. We ________ a worse day for the picnic — it rained nonstop.

A. couldn’t pick                                   B. couldn’t have picked

C. might not pick                                 D. might not have picked

2. If you’re not careful, you ________ get into even worse trouble.

A. need                                               B. can

C. could                                              D. must

3. Don’t worry—they ________ to phone.

A. can just forget                                 B. could just forget

C. can have just forgotten                     D. could have just forgotten

4. Somebody ________ the cage—the lion ________ on its own.

A. must open, couldn’t escape               B. must open, couldn’t have escaped

C. must have opened, couldn’t escape    D. must have opened, couldn’t have escaped

5. That car nearly hit me; I ________.

A. might be killed                                 B. might have been killed

C. may be killed                                   D. may have been killed

6. “________ I sign this?” “No, there’s no need.”

A. Can                                                B. May     

C. Must                                              D. Might

7. Their answers are exactly the same — one of them ________ from the other.

A. must copy                                      B. must have copied

C. could copy                                     D. should have copied

8. It is usually warm in my hometown in March, but it ________ be rather cold sometimes.

A. must                                              B. can                     

C. should                                            D. would

9. Liza ________ well not want to go on the trip—she hates traveling.

A. will                                                B. can                     

C. must                                              D. may

10. Thank you for all your hard work last week. I don’t think we ________ it without you.

A. can manage                                    B. could have managed

C. could manage                                 D. can have managed

11. Although this ________ sound like a simple task, great care is needed.

A. must                                              B. may                    

C. shall                                               D. should

12. You ________ be hungry already—you had lunch only two hours ago!

A. wouldn’t                                         B. can’t                   

C. mustn’t                                           D. needn’t

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