I this book for two weeks. I have to return it now. A. borrowedB. have borrowedC. keptD. h

问题补充：

I this book for two weeks. I have to return it now.

A. borrowed

B. have borrowed

C. kept

D. have kept

答案：

A. borrowed

B. have borrowed

C. kept

(答案→)D. have kept

解析：句意：这本书我已经借了两周了，现在我必须归还它。borrow是非延续性动词，用于现在完成时态时不能和时间段连用。可用延续性动词keep代替borrow。