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11.When we speak English today,we sometimes feel puzzled about which words or phrases_________.(  )
A.useB.usingC.to be usedD.to use

分析 当我们今天讲英语时,我们有时会困惑用哪些词或短语.

解答 答案是D.本题考查非谓语动词;题干中考查的是"疑问词+to do"充当介词about的宾语,相当于宾语从句;故排除A和B;并且句中出现了不定式动作的执行者,故需要用主动表被动,答案是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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