假如你是校学生会主席，请你以校学生会的名义写一份书面通知。
notice
boys and girls,
our school will have a meeting on the playground at 3:00 p. m. on june 18th. the meeting is about being (keeping)away from net bars and refusing unhealthy publications. we'll visit a picture show about healthy knowledge after the meeting. please get there on time with your chair..