—Did you find the missing couple in the mountain yesterday? —No, but we______to

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问题 —Did you find the missing couple in the mountain yesterday? —No, but we______to get in touch with them ever since.

选项 A、have tried
B、have been trying
C、had tried
D、had been trying

答案 B

解析本题考查对动词时态的应用。第二个说话者的意思是“我们一直试图与他们取得联系。”该动作从昨天一直持续到现在，并且有可能继续持续下去(直到找到失踪者)，强调这种延续性，应该用现在完成进行时态，故选B项。

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