My name is Mary. I am 14. Look!There is a blue box in the classroom. It's Miss Clark's. In the box there's a red schoolbag,a purple notebook and a dictionary. The schoolbag is Lisa's. It is nice. You can see a ruler,some books and three erasers in it. Look at the notebook!Is it Jack's? No,it isn't. It's his sister Anna's. Her name is on it. Whose dictionary is it? Maybe Mike's,but I'm not sure(确定的). Miss Clark found it in the classroom this morning. Is it yours? Ask Miss Clark for it.