题目内容
—Mr Smith must have been to your home this morning.
—No, he ______, because he didn’t know my address.
A. couldn’t B. can C. mustn’t D. may not
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题目内容
—Mr Smith must have been to your home this morning.
—No, he ______, because he didn’t know my address.
A. couldn’t B. can C. mustn’t D. may not