◎ 题干

. The boy was sitting at the desk, ______ hard when his mother got home.
A.to pretend to workB.to pretend to be working
C.pretending to workD.pretending to be working
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“. The boy was sitting at the desk, ______ hard when his mother got home. A.to pretend to workB.to pretend to be workingC.pretending to workD.pretending to be w…”主要考查了你对  【动词短语】【动词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。