–--I am terribly sorry, Lucy. I’ve left your notebook at home.
--- ? I reminded you last night.
A. So what
B. Why not
C. How e
D. What if
网友回答
A. So what
B. Why not
(答案→)C. How e
D. What if
解析：考查交际用语：A. So what那又怎样？B. Why not好啊，行啊。C. How e怎么回事？D. What if倘若…又如何？，句意：--我很抱歉露西。我把你的笔记本忘在家里了。--怎么回事？我昨晚提醒你了。选C