问题
选择题
By the time I got to the airport, the plane . [ ]
A. took off
B. has taken off
C. had taken off
答案
答案：C
搜题请搜索小程序“爱下问搜题”
By the time I got to the airport, the plane . [ ]
A. took off
B. has taken off
C. had taken off
答案：C