◎ 题干
—I’m afraid that I can’t do it.
—Oh, you should believe in yourself. You won’t know what you can do______ you try it.
A.ifB.becauseC.untilD.while
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—I’m afraid that I can’t do it.—Oh, you should believe in yourself. You won’t know what you can do______ you try it.A.ifB.becauseC.untilD.while…”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。