Youcan'tdowellinyourstudies______

发布时间：2020-07-26 21:12:52

You can't do well in your studies ________ you listen to the teacher attentively in class.A.ifB.untilC.whenD.unless

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D解析导解：本题强调条件，故不选B，C，而A不合逻辑．
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