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    I’m sorry. I ____ the exercise book in my home. I can’t hand it in at present.

    A. have left B. have forgotten C. left D. forgot

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    语法填空

    阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个恰当的词或使用括号中词语的正确形式填空。

    Dear Nancy,

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