Question

【题目】—Did you see Tom at the party?
—No, he by the time I got there.
A.left
B.was leaving
C.had left
D.has left

Answer 1

【答案】C
【解析】by the time的从句用过去时，主句用过去完成时，表示主句的动作先发生，故选C。句意是：在我到那里之前他已经离开了。