_______ in the queue for half an hour, Tom suddenly realized that he had left hi

题干

_______ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.

A．To wait

B．Having waited

C．Have waited

D．To have waited

上一题下一题 0.64难度单项选择更新时间:2013-12-26 08:30:31

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