Look! Here's a pencil box and it's orange. It's my pencil box and it's on the desk. This is a pen, it's black. And this is an eraser. It's blue and white. They're both (都) in the pencil box. This is a ruler and it's red. It's under the pencil box. That is a ruler, too. it's yellow. It's in the drawer (抽屉). Where's my math book? Ah, it's there, on the sofa.