the plane had taken off when we arrived at the airport.

The plane had __ when we arrived at the airport.A taken off I arrived at the airport ____ the plane had taken off． A.aft I arrived at the airport ____ the plane had taken off The plane had taken off when i reached the airport The plane ___ when we got to the airport A.had taken off B.w I arrive at the airport ——the plane had taken off. （ ）I arrived at the airport______the plane had taken off.A.a Hardly had they arrived at the airport ___the plane started when we arrived at airport the plane has fly.这句话语法有错吗? By the time he got to the airport,the plane had taken off.改为 Luckily,I arrived at the airport just --------the plane took When she got to the a__,the plane had taken off