Question

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

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

Answer 1

C

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。