◎ 题干
   _    we were walking along the river, we heard a cry for help.
A.WhileB.UntilC.AfterD.Before
◎ 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“_we were walking along the river, we heard a cry for help.A.WhileB.UntilC.AfterD.Before…”主要考查了你对  【并列连词】【从属连词】  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。