题目内容
--There is somebody at the door.Who _________ it be? Is it the postman?
--No,it _________ be him.It's just seven o'clock. It's too early.
A. might;can't B. will;won't C. may;mustn't D. must;may not
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题目内容
--There is somebody at the door.Who _________ it be? Is it the postman?
--No,it _________ be him.It's just seven o'clock. It's too early.
A. might;can't B. will;won't C. may;mustn't D. must;may not