Whenyouaresleeping,youhadbetter________allyourwindowsclosed.A.don't

发布时间：2020-08-05 00:27:46

When you are sleeping, you had better ________ all your windows closed.A.don't keepB.not keepC.not to keepD.not keeping

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B解析本题考查词组had better do sth.。
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