问题
选择题
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
答案：C
题目分析：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。