Look! This is Li Mei's room. What's in her room? Her books are on the desk. This is one of her shoes. Where is the other one? Oh, It's under the desk. She can not find her school bag. Where is it? Oh, It's behind the door. Li Mei can not look after  her things. Her mother often says to her, " Li Mei , you must look after your things." ,. (5) Her  _  is behind the door.
pencil pen school bag book