Howdirtythewindowsare!Theyreallyr

发布时间：2020-07-25 18:09:32

How dirty the windows are! They really require ______.A.to cleanB.being cleanedC.to have cleanedD.cleaning

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D解析考查动词用法。require doing =" require" to be done需要（被）做，根据句意选择D。
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