题目内容
1.The students are busy __________ the classrooms after they have finished their classes.( )A. | clean | B. | cleaned | C. | to clean | D. | cleaning |
分析 在他们上完课后这些学生正忙着打扫教室.
解答 答案是D.本题考查动名词的用法;题干中关键词busy常见的两个短语:be busy with sth.(忙于某事)和be busy doing sth.(忙于做某事);本题中需要的是动名词做宾语,故选D.
点评 首先判断选项中的动词在句中是以谓语还是非谓语形式出现,然后根据选项在句中的功能结合非谓语的基本用法做出合理的判断.要关注常见非谓语动词的搭配.
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