◎ 题干

--These days I can only sleep for four or five hours at night as I’m too busy with my research work.
--If you keep going on like that, you are sure to ______ sooner or later.
A.break downB.get downC.calm downD.put down
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“--These days I can only sleep for four or five hours at night as I’m too busy with my research work. --If you keep going on like that, you are sure to ______ s…”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。