問題詳情

21.－You were out when I dropped in at your house.－Oh, I _______ for a friend from England at the airport.
(A) was waiting
(B) had waited
(C) am waiting
(D) have waited

參考答案

答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)