The plane____(take off)before he arrive the airport.

The plane____(take off)before he arrive the airport. The plane took off,Then he got to the airport I arrive at the airport ——the plane had taken off. 1、____does the plane____? when they arrive at the airport,their flight _______ off.A.h We must _______（arrive in） the airport before 6:10 tomorrow he was just in time to see the plane____ When did they arrive ( ) the airport —The plane is due to take off at 7:50 from the airport. By the time he got to the airport,the plane had taken off.改为 before the bus will arrive 状语从句填空:As soon as he ____(arrive) at the airport,we’ll colle