How to keep safe in school_在学校怎么保证安全

Hello , everyone ! Its very important for us to keep safe in school . You should wear sports shoes when you in PE class ,and you also should do warming up exercises . While you were ining the dining hall ,you shouldnt run and why dont you wait in line . How about keeping your hands away from purple salt and try not to work alone when you in science lab . This is my advice.