问题
选择题
They had no sooner arrived at the bus station than the bus .
A．had left
B．will leave
C．left
D．is leaving
答案
答案：C
题目分析：考查时态：句意：他们一到车站公共汽车就离开了。表示 “一……就”的几个句型：Hardly / No sooner / Scarcely had + 过去分词 + when / than + 一般过去时。所以选C。