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  • 【题文】－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 
    【考点】数词
    【分析】请登陆后查看
    【解答】请登陆后查看
    难度：易
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