◎ 题干
—How was your day off yesterday?
—Perfect! It was my grandma's _____ birthday. We had a big cake.

A. eighty
B. eightieth
C. the eightieth
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“— How was your day off yesterday? — Perfect! It was my grandma's _____ birthday. We had a big cake. [ ]A. eighty B. eightieth C. the eightieth …”主要考查了你对  【序数词】  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。