—Musttheycleantheclassroomnow?—No,they________A.can'tB.needn'tC.don&

发布时间：2020-08-04 20:52:53

—Must they clean the classroom now?—No, they ________A.can'tB.needn'tC.don'tD.mustn't

网友回答

B解析must 的否定答语是“No, …needn't”，所以本题
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