_____in the queue for half an hour, Tom suddenly realized that he had left his w

题干

_____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

上一题下一题 0.64难度单项选择更新时间:2012-12-27 10:47:52

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