During the class activities at the beginning of last week, the homeroom teacher asked each team to exchange their ideas about the question: "What do I need to do to protect the environment". problem of improving the living environment around me (school, class, street, pond, lake ...) but the most concentrated opinion is to preserve and protect water tigers. The lake is a landscape, it makes the city more beautiful, quiet and peaceful. It seems that when people come to the tiger, they will feel more peaceful and comfortable. But recently the lake in this area is heavily polluted for many reasons: partly due to the waste water from the paper mill, partly from the houses around the lake, the pedestrians including the school. We have a habit of dumping garbage, throwing garbage out of tigers. That is why the tiger's water has lost its innate greenness, but replaced by a black-brown color, even the lake is stinking. Agree: This Sunday morning, the whole team will join the classmates to go to the lake to clean with specific actions: Clean up trash and leaves around the lake. Use a net to scavenge floating trash on the surface of the lake. Require the paper mill not to dump wastewater into the lake. Put up some signs on the edge of the lake to ask people not to take out the garbage, to throw the garbage in the lake. Do not defecate indiscriminately. Plant some more trees on the edge of the lake. At 8:40 p.m. the entire class will be present.