--Must we collect the waste paper and bottles now? -- . You can do it after class. A. Yes, you must B. No, you needn’t C. Yes, you may D. No, you mustn’t 题目和参考答案——青夏教育精英家教网—

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--Must we collect the waste paper and bottles now?

--____________. You can do it after class.

A. Yes, you must B. No, you needn’t

C. Yes, you may D. No, you mustn’t

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