阅读下面短文，然后从各愿所给的四个选项中选出一个最佳答案。

Hi, boys and girls1to our school. Here's a picture2school. It is a beautiful middle school. You can see three buildings (大楼). There are sixty3in the buildings. And each(每间) classroom has 30 orange desks4chairs. Look at that green building! It's5school library. It's very big and6. You can7lots of books in it. They are in the bookcases. All the teachers are very8. They are our good friends. And we9ask them for help. I10you will have good days here.