根据上下文，用括号内所给词的适当形式补全短文。

It is Sunday today. It's (sun) and warm. My (friend) and I (be) in the park. Look! Kitty is (sit) beside John. John is (read) a book under a tree. Sarah is (fly) a kite. Zhang Peng and Mike are (talk) (happy). Betty is (collect) rubbish. They are all (have) a good time.