() Is it on your desk?
() Sure.
() Excuse me! Can I use your eraser?
() Where is my eraser?
() Look! It's under the chair.
() No, it isn't.
This is my room (房间).I have a new desk and a chair.The book is on the desk.The ruler is under the book.My eraser is in the pencil box.My bag is on the chair.Where's my cat? It's under the chair.It's sleeping (睡觉).