30.They be at home. You see, the door is locked from the outside. A. can’tB. mayC. mustD

发布时间：2020-08-15 02:43:38


30.They      be at home. You see, the door is locked from the outside.
A. can’t
B. may
C. must
D. mustn’t

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(答案→)A. can’t
B. may
C. must
D. mustn’t
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