By the time you get to the airport, I __
题型:选择题
问题:
By the time you get to the airport, I ______ for you at the gate.
A.will have waited
B.will have been waiting
C.will be waiting
D.am waiting
By the time you get to the airport, I ______ for you at the gate.
A.will have waited
B.will have been waiting
C.will be waiting
D.am waiting