It's seven forty in the morning. The students are coming into the classroom. A girl is opening the windows. Some of the students are laughing and talking. Some are listening to them. Some are doing their homework. Miss Zhao is standing behind the teacher's desk. She is writing on the blackboard. Ann is cleaning her desk. Mike is helping her. They all look happy. What are Bill and Jim doing? Oh, dear! They are still playing basketball in the playground.