-Let’s go to the concert tonight, Michael!-Sorry, I . I have to help my mother with the houseworkA．mustn’t B．may notC．needn’t D．can’t 题目和参考答案——青夏教育精英家教网—

题目内容

—Let’s go to the concert tonight, Michael!

—Sorry, I _______. I have to help my mother with the housework

A．mustn’t B．may not

C．needn’t D．can’t

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