◎ 题干
He came here _____.

A. three years ago
B. for three years
C. about three years
D. three years before
◎ 答案
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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 came here _____. [ ]A. three years agoB. for three years C. about three years D. three years before …”主要考查了你对  【时间副词】  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。