Charlie was always happy. He liked helping others and people asked him for help when they were in trouble. He even got the name"Happy Charlie". One day, a boy called Waterworks came to the town on holiday. No matter what Charlie said to him, Waterworks would always find some reason to be sad-- My parents didn't buy me that toy; I can't watch TV; I don't like to go to school...... Everything seemed so sad to Waterworks. He was always sad. But Charlie didn't care and kept spending more time with Waterworks , trying to make him happy. Then, one day, they went out together. When Charlie was saying something, someone dropped a pie from a window and it leaned right on his head. He got such a sudden fear that couldn't say a word. The two boys were speechless. During those moments of silence, Waterworks missed Charlie's happy words so much that he finally said:"Wow,Charlie. That's a nice disguise." And, after saying those words, Waterworks felt so good and he realized that he was used to his friend's enthusiasm. And came to the town. Waterworks came to the town  _  .
for a vacation to visit Charlie for study for work