In China, many students spend their weekends studying at school or doing homework at home. What are the students doing at weekends in America?
Kathy: We’re washing people’s cars. My friends and I are working together. The money from the car washing is for our school basketball team.
Tom: I’m watching an interesting film with my friend. It’s noon. My friend is laughing at something. I am laughing, too. We’re laughing at the interesting dog in the film.
Tony: I’m with my grandmother in the park. My parents are working today. We’re playing and talking. She and I are good friends. She’s telling me interesting stories.
Kitty: I’m sitting in bed with my notebook computer. It’s 11:00 at night. I’m writing letters to friends. They’re in other countries. But I’m thinking about them. I am happy.
阅读以上信息，完成下面短文，每空一词。
Kathy, Tom, Tony and Kitty are       students. They spend their weekends in different ways. Kathy is washing people’s cars      her friends. Tom and his friends are laughing at the interesting       in the film. Tony is     to his grandmother’s interesting stories. Kitty is using her notebook     to write letters to her friends in other countries. All of them are happy at the weekend.