Question

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

A. the villagers did realize

B. the villagers realize

C. did the villagers realize

D. didn't the villagers realize

 

Answer 1

答案：C
解析：

not…until…句型在变成倒装的时候要把两个词与until后面的成分一并提前构成部分倒装。