桵ust I return the books to the library now? 桸o.you ． A. mustn't B．needn't C．can't D．don't 题目和参考答案——青夏教育精英家教网—

题目内容

桵ust I return the books to the library now?

　　桸o，you _____．

　　A. mustn't　　B．needn't　　C．can't D．don't

答案：B

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