Environmental protection is not one's job but everyone's duty. Today's environment is polluted not only by smoke, greenhouse gases, but the environment is also polluted by people's littering. Environmental protection is very necessary because clean environment brings us fresh air, health for everyone. Every week, the school organizes general cleaning classes. Each of you prepares a mask, as assigned by your classmates to get their belongings: brooms, shovels, water buckets, mops. The teacher assigned our team to pick up rubbish around the floor, clean the floor .... The ladies in the mop cleaning the floor, wipe the table, wipe the study table, sweep the class. The men table the table neatly. After only 45 minutes, our class was clean and bright. You are quick to quickly complete the work assigned. Sweat sweat, but on the face of everyone who clearly demonstrates the joy of doing good work contributes to the class room cleanliness.