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    14．-Have you found the missing?couple in the mountain ? -No, but we hard to get in touch with them． A． have tried B．have been trying C．had tried D．had been trying ． 【查看更多】

     

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    —Have you found the missing?couple in the mountain ?

             —No, but we     hard to get in touch with them．     

             A． have tried          B．have been trying 

             C．had tried                 D．had been trying ．

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    —Have you found the missing?couple in the mountain ?

    —No, but we______hard to get in touch with them．     

           A． have tried     B．have been trying    C．had tried        D．had been trying ．

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    —Have you found the missing?couple in the mountain ?
    —No, but we______hard to get in touch with them．     

    A．have triedB．have been tryingC．had triedD．had been trying ．

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    —Have you found the missing?couple in the mountain ?
    —No, but we     hard to get in touch with them．     

    A．have triedB．have been trying
    C．had triedD．had been trying ．

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     —Have you found the missing?couple in the mountain ?

        —No, but we     hard to get in touch with them．     

        A． have tried                      B．have been trying 

        C．had tried                        D．had been trying ．

     

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