问题
选择题
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 come
C．Why not
D．So what
答案
答案：B
考查交际用语。What if如果…怎么样；How come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。