【題目】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】

考查動詞require的用法。句意：地板需要清洗，所以學生們被要求去做這項工作。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。兩個都是require的固定用法，故選A項。

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