-Did you catch the first bus?
-No ,it the stop by the time I got there.
A. left
B. was leaving
C. had left
D. would leave
网友回答
A. left
B. was leaving
(答案→)C. had left
D. would leave
解析：句意：上文，你赶上第一班公共汽车了吗？没有。我到那里的时候，它已经离开车站了。“我到那里”已经发生在过去了，而“它已经离开车站”发生在“我到那里”之前，表示过去的过去，故用过去完成时，选C。