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    33．[2010·陕西宝鸡市质检三]-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 33B考查动词时态.句意:我们一直在努力和他们联系.根据句意用现在完成进行时. 【查看更多】

     

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    （2010·陕西省宝鸡市高三教学质量检测三）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 ．

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