◎ 题干
She cared more about her students than her own health. That’s why two years passed _____ she was treated for breast cancer.
A.since B.before C.after D.until
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“She cared more about her students than her own health. That’s why two years passed _____ she was treated for breast cancer. A.since B.before C.after D.until…”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。