29、_____ in the line 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
科目:高中英语 来源: 题型:
_____ in the line 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
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