Not until all the fish died in the river, ______how serious the pollution was.

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问题 Not until all the fish died in the river, ______how serious the pollution was.

选项 A、did the villagers realize
B、the villagers realized
C、the villagers did realize
D、didn’t the villagers realize

答案A

解析 本题考查倒装结构。由not until,little,hardly,never等表示否定意义的单词或短语位于句首时,主句句子要用倒装,即将助动词或情态动词放在主语前面,故答案为A)。
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