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    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 解析:本题考查现在分词完成式的用法.根据语法规则.当一个句子中前后两个部分被“. 隔开.而前一部分又不是一个完整的句子.则非完整的部分往往需要用非谓语动词.即用分词来连接句子.故排除A.B.D项.从题意可看出.“wait 这个动作发生在主句谓语动作realize之前.故用分词的完成式.即C项. 【查看更多】

     

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


    1. A.
      To wait
    2. B.
      Have waited
    3. C.
      Having waited
    4. D.
      To have waited

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    ______ 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?

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    ______ 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

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    _______ 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

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    _______ 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

     

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