◎ 题干
____for the doctor's careful treatment, he____till last year.
A.If it is not; can't live B.Were it not; couldn't live
C.Had it not been; couldn't have lived D.If they were not ; couldn't live
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“____for the doctor's careful treatment, he____till last year. A.If it is not; can't live B.Were it not; couldn't live C.Had it not been; couldn't have li…”主要考查了你对  【虚拟语气】【情态动词】  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。