Hello, I'm Jack. Please look at the picture of my classroom. On the front wall, there is a blackboard.It's very big. In front of the blackboard, there is a yellow desk. It's for our teachers. There is a computer on it. On the right wall there is a map of China. On the black (  ) wall of our classroom is a blackboard. We can write and draw on it. There are forty students in my class. Everyone has a desk and a chair. In my classroom, my desk is next to Li Fang's desk. She is on my left . And Tim is on my right. In front of me is John . Who is behind me ? It's a girl, Amy. They are my good friends. How many blackboards are there in the classroom ?
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