問題詳情

29. _____ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.
(A) To wait
(B) Have waited
(C) Having waited
(D) To have waited

參考答案

答案：C
難度：非常困難0
統計：A(0),B(4),C(0),D(0),E(0)