◎ 题干
The dog had _____ serious toothache so its owner took it to _____ animal doctor.
A.an, an B.the, / C.a, /D.a, an
◎ 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“The dog had _____ serious toothache so its owner took it to _____ animal doctor. A.an, an B.the, / C.a, /D.a, an…”主要考查了你对  【定冠词(the)】【不定冠词(a,an)】【零冠词】  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。