Not until the heavy snow blocked the express how serious the weather was. A. the villager

问题补充：

Not until the heavy snow blocked the express how serious the weather was.

A. the villagers did realize

B. the villagers realized

C. did the villagers realize

D. didn’t the villagers realize

答案：

A. the villagers did realize

B. the villagers realized

(答案→)C. did the villagers realize

D. didn’t the villagers realize

解析：考查倒装句：句意：直到大雪堵塞了高速公路，村民才意识到天气多么的严重。Not until+时间状语从句放在句首，从句用部分倒装，助动词did放在主语前面，选C。