◎ 题干
—We held a party for my grandpa’s      birthday last night.
—You must have had      good time.
A.eightieth; /B.eightieth; aC.eighty; aD.eighty; /
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—We held a party for my grandpa’s birthday last night.—You must have had good time.A.eightieth; /B.eightieth; aC.eighty; aD.eighty; /…”主要考查了你对  【基数词】【序数词】【时刻】【分数】  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。