-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 题目和参考答案——青夏教育精英家教网—

题目内容

—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

【解析】

试题分析：考查情态动词表示推测：句意：--今天杰克值日吗？--不可能是他。明天该轮到他。Can’t be用于否定推测“不可能是”，must表示推测的时候，表示“肯定是”，won’t不愿意，needn’t不必，选C。

考点：考查情态动词表示推测

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