Not until all the fish died in the river______how serious the pollution was.
A、
did the villagers realize
B、
the villagers realize
C、
the villagers did realize
D、
didn't the villagers realize
【正确答案】
A
【答案解析】
当never,hardly,seldom,scarcely,little,not only,by no means等表示否定或部分否定意义的词或短语位于句首时,句子应部分倒装,即将助动词、情态动词、系动词等提至主语前面。故选A。
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