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. What if
C. How about
D. Why not
答案:
A. How come
(答案→)B. What if
C. How about
D. Why not
解析:考察交际用语。A怎么会?B要是…又如何?C…怎么样?D为什么不…?结合句意可知B正确。句意:—我们不认为明天我们能够去登山?—要是天气变好了怎么办?