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最佳答案：和
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最佳答案：music room
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最佳答案：Is Helen in the music classroom?
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最佳答案：where is the music class?
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最佳答案：in music classroom 这里的music是名词,修饰classroom ,classroom没有特指,可以不用加定冠词the
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最佳答案：the music room is on the second floor
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最佳答案：We are on the music class in the music classroom.
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最佳答案：We have shows at music room every year.
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最佳答案：Does the school have any music classrooms
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最佳答案：are there any music room in the school