◎ 题干
-How was your day off yesterday?
-Perfect! It was ____ birthday of my grandpa’s . We had a big family celebration.
A. seventy    B. seventieth    C. the seventieth 
◎ 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“-How was your day off yesterday?-Perfect! It was ____ birthday of my grandpa’s . We had a big family celebration. A. seventy B. seventieth C. the seventie…”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。