◎ 题干
— Did Tom return your book?
— Yes, but he _____ it for ten days before he returned it.        
[     ]
A. had kept                
B. has kept
C. had borrowed            
D. has borrowed
◎ 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“— Did Tom return your book?—Yes, but he _____ it for ten days before he returned it.[ ]A. had keptB. has keptC. had borrowedD. has borrowed…”主要考查了你对  【过去完成时】  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。