When_________questionsinclass,ones

发布时间:2020-07-25 06:45:33

When _________ questions in class, one should answer them as clearly as possible.A.askingB.to askC.to be askedD.asked

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D解析句意:课堂上被提问时,应尽可能清楚地回答。本句前半句实际上是when one is asked questions in class的省略句。C项表示“将要被提问”,不合乎情理。该结构可理解为连词与分词连用。
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