阅读理解，根据短文内容判断正误
It's fine today. The sun is in the sky. Mr. Green and his family are in the park. Mr. and Mrs. Green are standing under the trees and looking at their children. Ann is flying a kite. The boy in a white shirt and blue trousers is her brother. He's reading a book. Ann's younger brother is too young. He can't walk and run. He's drinking milk. Ann's sister isn't in the park. She is at school.