◎ 题干
--- The young man spent as much time as he _______ the experiments.
--- No wonder he succeeded _______.
A.did; by the endB.could doing; in the end
C.could doing; at the endD.could to do; in the end
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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 young man spent as much time as he _______ the experiments. --- No wonder he succeeded _______.A.did; by the endB.could doing; in the endC.could doin…”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。