Many teens don’t get enough sleep because they have too much homework to do, which _______ them up at night.

A.makes B.breaks C.turns D.keeps

D. 

解析試題分析:考查動詞辨析:A. makes制作B. breaks打破C. turns轉(zhuǎn)D. keeps保持,keep up是詞組“維持,不低落”這里是“不能睡覺”,句意:很多年輕人沒有足夠的睡眠,因為作業(yè)太多,這使他們晚上不能睡覺。選D。
考點:考查動詞辨析
點評;動詞辨析考查平時的記憶是否牢,除了動詞的拼寫,含義也要記牢,還有的動詞有不同含義要記全,相似的動詞要辨析清楚。

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