Not until all the fish died in the river__________ how serious the pollution was.
A、did the villagers realize
B、the villager srealize
C、the villagers did realize
D、didn't the villager srealize
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正确答案
试题解析
Not until前置要用倒装,应排除B、C。Not否定词已在句首,didn’t中的否定与之重复,所以答案为A。