Tom, you’ve got a D in chemistry． ?
—Well, I find the subject hard and I think I’ll drop it for history next term．
A. What if
B. How e
C. Why not
D. So what
网友回答
A. What if
(答案→)B. How e
C. Why not
D. So what
解析：考查交际用语。What if如果…怎么样；How e什么原因；Why not为什么不；So what那又怎样。Tom你化学 D，怎么回事？所以选B。