根据短文内容，判断句子正误。

Look at this. It's a pencil case(铅笔盒). It's orange. It's my pencil case. What's in it? Look, this is a pen. Its black. This is a pencil. It's red. And this is a ruler. It's green. This is an eraser(橡皮擦). It's blue and white. My pencil case is big and nice. I like it.