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【题目】The floor requires ________, so the students are required ________ the work.

A.washing; to doB.to wash; doingC.washing; doingD.to wash; to do

【答案】A

【解析】

考查动词require的用法。句意:地板需要清洗,所以学生们被要求去做这项工作。sth. require doing一般表示需要做某事,require sb. to do sth. 表示要求某人去做某事。两个都是require的固定用法,故选A项。

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