—Is Jack on duty today? —It be him. It is his turn tomorrow.A. mustn’t B. won’t C. can’t

发布时间：2020-08-22 02:49:38

—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

网友回答

A. mustn’t
B. won’t
(答案→)C. can’t
D. needn’t
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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