—What? You failed the driving test again! —?A. So whatB. How comeC. Why notD. What for

问题补充：

—What? You failed the driving test again!

—?

A. So what

B. How come

C. Why not

D. What for

答案：

(答案→)A. So what

B. How come

C. Why not

D. What for

解析：考查交际用语：A. So what 那又怎样？B. How come怎么回事？C. Why not为什么不？D. What for为什么？，句意：--什么？你驾驶测试又失败了！--那又怎样？选A。