—Don’t worry. Your brother is coming to help you. — he doesn’t come?A. What aboutB. Why no

问题补充：

—Don’t worry. Your brother is coming to help you.

— he doesn’t come?

A. What about

B. Why not

C. What if

D. What for

答案：

A. What about

B. Why not

(答案→)C. What if

D. What for

解析：A表示征求建议或提出意见，···怎么样呢？B提建议，为什么不做……。why not do sth?C如果···怎么办呢？后加一般现在时态的句子，表示询问建议。D为什么？句意：别担心，你的哥哥会来帮助你。如果他不来那可怎么办呢？故选C。