题目内容
—Is Jack on duty today? —It ______ be him. It is his turn tomorrow.
A. mustn’t B. won’t C. can’t D. needn’t
【答案】
C
【解析】情态动词表示推测,肯定性推测用must,否定性推测要用can’t.
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题目内容
—Is Jack on duty today? —It ______ be him. It is his turn tomorrow.
A. mustn’t B. won’t C. can’t D. needn’t
C
【解析】情态动词表示推测,肯定性推测用must,否定性推测要用can’t.