The plane when we got to the airport.A. had taken offB. was taken offC. will take offD. i

问题补充：

The plane when we got to the airport.

A. had taken off

B. was taken off

C. will take off

D. is taking off

答案：

(答案→)A. had taken off

B. was taken off

C. will take off

D. is taking off

解析：考查时态.根据从句内容我们已经到达了机场,可知主句内容在这之前已经发生,故主句用过去完成时态,选A.我们到达机场时,飞机已经起飞了.