问题描述：
Some people think the stock market will crash,but ___.
A.I wonder if it happens B.I doubt if it will happen
C.I am afraid it wouldn't happen D.I doubt if it does happen
这道题我选的是C,可是答案选的是B,请问为什么C不对?
A.I wonder if it happens B.I doubt if it will happen
C.I am afraid it wouldn't happen D.I doubt if it does happen
这道题我选的是C,可是答案选的是B,请问为什么C不对?
问题解答：
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