Mary and Lily are sisters. They share(合用)a room. This is their room. It's not a big one. You can see two beds in the room. Mary's bed is yellow and Lily's bed is red. Their schoolbags are now on the beds. You can't see their shoes. They are under the beds. The two sisters have only one desk. It's a big desk. Their alarm clock, books and dictionaries are on the desk. They often do their homework there.