Thestudentsspendasmuchtimeast

发布时间：2020-07-28 10:10:09

The students spend as much time as they can ________ for the examination．A.prepareB.to prepareC.preparedD.preparing

网友回答

D解析此题考查spend time(in)doing sth．的结构，A，B，C三个选项都不符合句式结构。
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