◎ 题干
—How long        you        this library book?          
—For three days.   

A. have;  borrowed                      
B. have;  kept      
C. did;  borrow                          
D. were;  kept
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“—How longyou this library book?—For three days.[ ]A. have ; borrowedB. have ; keptC. did ; borrowD. were ; kept…”主要考查了你对  【实义动词的过去分词】  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。