题目

题型：不详难度：来源：

I am sorry I can’t meet you at the station. I _____ by the time you come back from abroad.

A．am leaving

B．had left

C．will have left

D．have left

答案

C

解析

试题分析：考查时态。by+过去的时间，主句使用过去完成时；by+将来的时间，主句用将来完成时。by the time you come back from abroad所知的时间是将来，故主句用将来完成时，即will have done sth。故选C。