in the queue for half an hour, the old man suddenly realized be had left the cheque in the car. A. Waiting B. To wait C. Having Waited D. To have waited 【查看更多】
题目列表(包括答案和解析)
_____ in the queue for half an hour, the old man suddenly realized be had left the cheque in the car.
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A. Waiting B. To wait C. Having Waited D. To have waited
