帮忙写一篇英语作文.为了提高英语口语表达能力,假定伱班明天下午将召开一次以“Keep Our School Clean”

One possible version:Good afternoon,everyone !We are studying in this school.It’s our duty to keep it clean and tidy.It’s not good to spit in public places,such as in the library,in the classroom,in the school yard.We should neither draw anything on the walls nor throw any litter onto the ground.I think we must make it a rule to do some cleaning everyday.If everyone tries his best to do something useful for our school.I‘m sure our school will be more beautiful.That’s all,Thank you!哇哈.