◎ 题干
I must return the two books to the library. I ______ them for half a month.
[     ]
A. borrowed
B. kept
C. have kept
D. have borrowed
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“I must return the two books to the library. I ______ them for half a month. [ ]A. borrowed B. kept C. have kept D. have borrowed …”主要考查了你对  【实义动词的过去分词】【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。