◎ 题干
______ he had worked hard all the time, he failed the exam again.
A.IfB.AsC.WhileD.Because
◎ 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“______ he had worked hard all the time, he failed the exam again. A.IfB.AsC.WhileD.Because…”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。