◎ 题干
How long have you _____?

A. bought the book
B. borrowed the dictionary
C. left our school
D. none of the above
◎ 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“How long have you _____? [ ]A. bought the book B. borrowed the dictionary C. left our school D. none of the above …”主要考查了你对  【现在完成时】  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。