阅读短文，回答问题

Nice to meet you! I'm Zoe. My family and I have a good day in China. My parents have two daughters. They're Helen and me.

Welcome to my room. It's big and tidy. Helen and I share （共用） the room. Look! Two beds are in the middle of the room. The yellow one is mine, and the white one is Helen's. This is our bookcase. Next to it is our desk. It's white. Our books are on the desk. Where is our computer? It's on the desk, too. I always e-mail my friend Grace on the computer. Helen likes to play games on it. What's that? It's a green sofa. A schoolbag and a hat are on it. The schoolbag is yellow, and it's Helen's. The hat is black. Is it mine? No, it's my friend John's. His favorite color is black.