---MustIdosomewashing?---Yes,you________,butyou________doitatonce.A.mu

发布时间：2020-08-07 09:04:50

---Must I do some washing?---Yes, you ________, but you ________ do it at once.A.must; mustn'tB.need; mustn'tC.must; needn'tD.need; needn't

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C解析must的否定回答用needn't，肯定回答用must。
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