The plane ______ at 7:00 pm, so I have to be at the airport by 6:40 at the latest

问题描述:

The plane ______ at 7:00 pm, so I have to be at the airport by 6:40 at the latest
a、leaves
b、would leave
c、will have left
d、has left

C 将来完成时 将来的结果对现在造成的影响