30． in the queen for an hour, he suddenly realized he had left the cheque at home. A. Waiting B. To wait C. Having Waited D. To have waited 【查看更多】

 

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         in the queen for an hour, he suddenly realized he had left the cheque at home．

A．Waiting         B．To wait         C．Having waited                   D．To have waited

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 in the queen for an hour, he suddenly realized he had left the cheque at home.

A. Waiting        B. To wait           C. Having Waited    D. To have waited

 

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