Clean the classroom

　　The pupils are in the classroom. It is very dirty. They are helping to clean up the classroom. Louise wipes the whiteboard with a duster. Kenny and Lionel sweep the floor with a broom. There is a lot of litter on the floor. Peter empties the waste-paper basket.
　　Some pupils help to arrange the storybooks in the class library. The library corner looks neat and clean now.
　　The pupils are happy to keep the classroom clean. All of us must keep our classrooms clean.