Not until all the fish died in the riverhow specious the pollution was. A. did the village

问题补充：

Not until all the fish died in the riverhow specious the pollution was.

A. did the villagers realize

B. that the villagers realized

C. the villagers did realize

D. didn’t the villagers realize

答案：

(答案→)A. did the villagers realize

B. that the villagers realized

C. the villagers did realize

D. didn’t the villagers realize

解析：考查倒装结构。Not until否定放在句首，主句的主谓要用倒装结构，故选A。