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高中英语
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单选题
1.
(2018高三上·天津月考)
— With the failure of the experiment, we have reached a dead end.
— Cheer up! Many good things would never have happened if the bad events________ first.
A .
don't happen
B .
didn't happen
C .
hadn't happened
D .
haven't happened
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备考2019年高考英语一轮复习28:虚拟语气