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

A. did the villagers realize B. the villagers realized

C. the villagers did realize D. didn’t the villagers realize

 

A

【解析】

試題分析：句意：知道河里所有的魚都死了，村民們才意識到到污染有多嚴重not until置于句首，后面要部分倒裝，助動詞did要放在主語前面，所以選A。

考點: 考查倒裝句

 

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