Linda and Betty are both 16 years old. They are high school students. They were on vacation last month. They went to some towns and villages and they visited some places of interest. They saw lot of interesting things, They enjoyed themselves(他们自己) very much.
One day they stayed in a small town. It was too hot and they wanted to find a river and swim in the water. They drove the car slowly. Suddenly Linda saw a lake not far away. They drove quickly and stopped the car by the lake. They looked around and found a man who was sitting on a stone(石头) and fishing. When they took off their clothes and decided to jump into the water. the man came up to them and said, "I'm sorry, Swimming is not allowed (允许) in the lake.
Betty said angrily, "Why didn't you tell us about it before we took off our clothes?"
"But it isn'tforbiddento take off your clothes by the lake," said the man.
