问题补充:
– Do you know William failed the exam, Jenny?
-- ? As far as I know, he is always working hard.
A. So what
B. How come
C. Why not
D. What for
答案:
A. So what
(答案→)B. How come
C. Why not
D. What for
解析:考查交际用语。So what那又怎么样;How come怎么会那样;Why not为什么不;What for 为何。句意:你知道William考试失败了吗?怎么会那样,据我所知,他一直努力学习。所以选B。