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-Is Jack on duty today? -It be him. It’s his turn tomorrow. A. mustn’t B. won’t

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-Is Jack on duty today? -It be him. It’s his turn tomorrow. A. mustn’t B. won’t

—Is Jack on duty today?
     —It________ be him. It’s his turn tomorrow.

A. mustn’t  B. won’t      C. can’t D. needn’t

 

试题答案

C