He be in the garden.He must be in the room.‘A. can'tB. mustn’tC. will notD. may not

问题补充：

He be in the garden.He must be in the room.

‘

A. can

B. mustn’t

C. will not

D. may not

答案：

(答案→)A. can

B. mustn’t

C. will not

D. may not

解析：否定的推测用can’t,而不用mustn’t.