問題詳情

23. By the time Amy arrived at the airport, her boyfriend's plane______ already.
(A) took off
(D) was to take off
(B) was taken off
(C) had taken off

參考答案

答案:C
難度:計算中-1
書單:沒有書單,新增

用户評論

ㄚ原】評論

過去完成式