He _____ have completed his homework; otherwise, he would have been plying footb
题型：云南省期末题难度：来源：
| He _____ have completed his homework; otherwise, he would have been plying football with others. |
| [ ] |
A. can"t
B. mustn"t
C. shouldn"t
D. wouldn"t |
答案
| A |
举一反三
— Lucy doesn"t mind lending you her dictionary.
— She _____. I have already borrowed one. |
| [ ] |
A. can"t
B. mustn"t
C. needn"t
D. shouldn"t |
— There _____ be anybody in the classroom, for the lights are off.
— I"ll go and check. |
[ ] |
A. mustn"t
B. won"t
C. needn"t
D. can"t |
一 Look at Helen in the room.She is still working so late.
一 It _____ be Helen there. She has flown to London with her parents this morning. |
| [ ] |
A. mustn"t
B. wouldn"t
C. mightn"t
D. can"t |
| The room is in a terrible mess; it _____ have been cleaned. |
| [ ] |
A. can"t
B. mustn"t
C. shouldn"t
D. wouldn"t |
| Little Tom _____ finished his homework; otherwise, he wouldn"t be listening to music. |
| [ ] |
A. can have
B. must have
C. should have
D. might have |
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