The physical layouts of classrooms vary. Initially, student desks stand in rows.

课堂里的实体布局变化，首先是，课桌排成行。

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Totten usually walked up and down the rows of desks requesting answers from student after student in the order the questions had appeared on our homework sheets.

托顿通常在课桌旁走来走去，按照作业纸上问题的顺序一个接一个地向学生提问。

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" These items could include "student desks, keys, shoes, belts, books, cell phones, iPods, book bags, laptops, pens, pencils, etc.

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Student heads begin to droop, coming to rest on their desks.

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