____ in the queue for half an hour, the old man suddenlyrealized he had left the cheque in the car.

题目简介

____ in the queue for half an hour, the old man suddenlyrealized he had left the cheque in the car.

题目详情

____  in the queue for half an hour, the old man suddenly  realized he had left the cheque in the car.  
[     ]
A. Waiting                   
B. To wait  
C. Having waited              
D. To have waited
题型:单选题难度:中档来源:同步题

答案

C

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