【题目】They are eating moon cakes in the Mid-Autumn.（就划线部分提问）
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【答案】What are they eating in the Mid-Autumn?
【解析】
原句句意：他们中秋节正在吃月饼。划线部分moon cakes是东西用what提问，句中are放到主语前，首字母大写，句号变问号，其他照抄，故答案为What are they eating in the Mid-Autumn?
