-- We don’t think we’ll be able to go mountain-climbing tomorrow. — the weather turns out

问题补充：

-- We don’t think we’ll be able to go mountain-climbing tomorrow.

— the weather turns out fine?

A. How come

B. How about

C. What if

D. Why not

答案：

A. How come

B. How about

(答案→)C. What if

D. Why not

解析：情景对话题。“我认为我们明天不能爬山了”“假使明天天气好转怎么办？”A. How come怎么回事 B. How about怎么样 C. What if假使 …怎么办 D. Why not 为什么不选C