◎ 题干
—Did you find the missing couple in the mountain yesterday?
—No, but we ________ to get in touch with them ever since.
A.have triedB.have been tryingC.had triedD.had been trying
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“—Did you find the missing couple in the mountain yesterday?—No, but we ________ to get in touch with them ever since. A.have triedB.have been tryingC.had tried…”主要考查了你对  【一般现在时】【将来进行时】【过去完成进行时】【过去将来时的被动语态】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。