阿摩線上測驗
16. By the time we arrived at the airport, the flight __________. We had no choice but to wait for the next one.
(A) take off
(B) has taken off
(C) had taken off
(D) would take off
答案：登入後查看
統計： A(27), B(49), C(145), D(25), E(0) #3438408
統計： A(27), B(49), C(145), D(25), E(0) #3438408
