"Basketball is not only for young people," my grandpa often says. Grandpa is a retired   teacher. He likes basketball. He isn't tall or strong. And he can not run fast. But he is a member of a basketball team. "I play for 15 minutes in every game," says Grandpa. "I can score 10 points   for my team." He is right. He is really good at basketball. I learn a lot from him. Grandpa plays basketball with his friends. They play for about an hour every time. Sometimes their team comes to our school. And they play with our school team. Then the young students and the old people can have fun together. "What is sport? Sport is a game to make people healthy and happy," Grandpa tells me. Grandpa plays basketball for  _  in every game.
fifteen minutes about an hour ten minutes two hours