Warning signs posted in the corridor

hello: it's better that the slogans in the school corridor should be positive. For example, the school is my home, and cleaning depends on everyone. It's warmer. Civilized language is often accompanied by the mouth, and the spring breeze is easy to walk. Smile is our language, and civilization is our belief. Remove garbage and dirt-it is everyone's responsibility to prevent pollution and maintain cleanliness. Wait, the above is for reference only.