-- Mr. Brown National Day is coming…? Just occupy yourself in your study.A. So whatB.

问题补充：

-- Mr. Brown, National Day is coming…

--- ? Just occupy yourself in your study.

A. So what

B. What if

C. How come

D. What for

答案：

(答案→)A. So what

B. What if

C. How come

D. What for

解析：考查交际用语：A. So what那又怎样？B. What if倘若…又如何？C. How come怎么回事？D. What for为什么？句意： --布朗先生，国庆节就来了。--那又怎样？专心学习。选A。