---Have you brought the book I lent to you yesterday?
---Sorry, I put it on my bookshelf and all about it
A. had forgotten
B. forget
C. forgot
D. will forget
网友回答
A. had forgotten
B. forget
(答案→)C. forgot
D. will forget
解析：考查时态。句意：昨天你带来了我借给你的那本书吗？——抱歉，我把它放在书架上，完全忘了这回事。可知下文描述的过去发生的动作，故用过去时态，选C。