Classroom 1 is under the teachers' office.

第一教室在教师办公室的楼下。

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Unit 1 it's a classroom.

第一单元这是教室。

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Eg. 1 How long were you by yourself in the classroom?

你独自一人在教室里待了多长时间？

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Eg. 1 How long were you by yourself in the classroom?

你独自一人在教室里待了多长时间？

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