Welcome to my room. Open the door . You can see a desk. There are some books on the desk. My pens are on the desk, too. Behind the door there is a basketball. I love it very much. On the wall there are two pictures. Look at the boy. It's me. Where is my football? Oh! It's on the sofa . Is my computer on the desk? No , it isn't . It's next to the desk. I love my room. It's very nice , isn't it? .Where are the books? They are  _  .
on the sofa on the wall on the desk under the desk