——Didyoufindthemissingcouplein

更新 2022-09-03
科目英语
题型单选题
难度中等
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挑错有奖

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

A．have tried

B．have been trying

C．had tried

D．had been trying

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