One day, I got punished for my poor grades and had to clean the classroom after a few chemistry labs.

有一天 我因为成绩太差而受到惩罚 在做了几次化学实验后 我不得不打扫教室。

Her son's head teacher asks the students to clean the classrooms and use disinfecting wipes to clean the desks, chairs and classroom floors, she said.

她说，她儿子的班主任要求学生打扫教室，用消毒湿巾清洁课桌椅和教室地板。