高等继续教育 / 英语语法
正确率：100%
题型描述: 单选题
_ _ _ _ _ in the queen for half an hour, the old man suddenly realized he had left the cheque in the car.
A.To have waited
B.To wait
C.Having Waited
D.Waiting
_ _ _ _ _ in the queen for half an hour, the old man suddenly realized he had left the cheque in the car.
A.To have waited
B.To wait
C.Having Waited
D.Waiting
参考答案：
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