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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 容易
  • 浏览 751

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

A.have been trying B.have tried C.are trying D.were trying
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—Didyoufindthemissingcoupleint