問題詳情

22.________in the qucue for half an hour ,the old man auddenly realized he had left the cheque in the car.
(A)Waiting
(B)To wait
(C)Having waited
(D)To have waited

參考答案

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