（2015•广西北海）—Is that boy under the tree Li Ming? —No, it _______ be Li Ming. He is in Shanghai now.

题型：单选题题类：真题难易度：普通

—Is that boy under the tree Li Ming?

—No, it _______ be Li Ming. He is in Shanghai now.

A、can't B、mustn't C、needn't D、won't

举一反三

—No, you _______.

一You're too tired．You take a holiday．

— No, you ________.

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