判断文章中的人物行为是否得当。

It's Sunday today.It's warm and sunny. Bill and his friends are in the park. Bill is watching flowers. There are many insects(昆虫)on the flowers.Where is Ben?Look! He's in the tree. What's he doing? He's picking(摘)leaves. Who is the boy under the tree? He is John. He is reading a book under the tree.Where is Mike?Look! He is running on the grass and flying a kite.They're very happy in the park.

Name	Activity	Judge
Bill	watch flowers
Ben	pick leaves in the tree
John	read a book under the tree
Mike	run on the grass and fly a kite