◎ 题干
He tried many a _______, but I think _______ not enough.  
A. time, it is  
B. times, they are  
C. times, that is  
D. time, which is
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“He tried many a _______, but I think _______ not enough.[ ]A. time, it is B. times, they are C. times, that is D. time, which is…”主要考查了你对  【名词】【主谓一致】  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。