All the students must look after the desks and chairs.
2
有的小学生没有足够的学校可以上学，有些学校没有足够的好教室，有的教室没有好的桌椅板凳。
Some pupils haven't got enough school. Some school haven't got enough good classroom. Their classroom is very old. Some classroom haven't got enough good tables and chairs.
3
本实用新型属于一种中、小学生课桌椅。
The utility model belongs to a school desk and chair for middle and primary school students.
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