Not until all the fish died in the river

问题选择题

Not until all the fish died in the river ______ how serious the pollution was.

A．the villagers did realize

B．the villagers realized

C．did the villagers realize

D．didn’t the villagers realize

答案

答案：C

考查倒装句。否定词放在句首主句使用部分倒装，助动词提前，句意：直到河里所有的鱼都死了，村民们才意识到污染是多么的严重呀。根据语境选C。