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Last Sunday, Brave Dog invited(邀请)Lucky Dog to visit the Great Wall. They got on a bus at Tian'anmen Square. They arrived at Badaling at nine o'clock. There were many people. They began(开始)to climb(爬)the Great Wall. They took many pictures on their way. They climbed to the top of Badaling at twelve. Brave Dog told Lucky Dog, “If you can climb to the top, you are a true man.” Lucky Dog said, "So, I'm a true man!" Brave Dog laughed and said, "You aren't! You can only be a true dog!"