◎ 题干
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When he was young, he used to __________ hard at his lessons.
A.devote to workingB.devote himself to work
C.be devoted to workD.be devoted to 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“.When he was young, he used to __________ hard at his lessons.A.devote to workingB.devote himself to workC.be devoted to workD.be devoted to working…”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。