问题
选择题
---I have cleaned the room three times a day. Look, It is a mess again.
--- ! Wait until the children go to bed.
A．How come
B．Why bother
C．So what
D．What for
答案
B
题目分析：考查交际用语：A. How come怎么回事？ B. Why bother为什么费事？C.So what 那又怎样？ D. What for为什么？句意：--我一天打扫三次房间，看，又脏了？--别费事了！等孩子睡觉吧。选B。