问题
选择题
You can't predict everything. Often things don't ________ as you expect.
A．run out
B．work out
C．break out
D．put out
答案
答案：B
work out 结果是。run out 耗尽；break out (火灾，战争等)爆发；put out 扑灭(大火等)。故选B项。
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