look!itbe new headmaster.-itbe him.he went to US A.can;mustn't B.can;can' tC.must canD.must may

分类: 作业答案 • 2022-03-20 10:49:26

问题描述：

look!it__be new headmaster.-it__be him.he went to US A.can;mustn't B.can;can' tC.must canD.must may

答

选B.
第一个表猜测,不是很肯定；第二个是非常肯定“他不是新校长.”所以应是“must not”,但must表猜测时的否定形式应该是“can't”,所以选择
B.

look!it__be new headmaster.-it__be him.he went to US A.can;mustn't B.can;can' tC.must canD.must may