2 . It's sunny today. My family and I go to a park. We like the park very much. It's big and beautiful. There ________ many trees and flowers in it. Look! An old man is sitting ________ a chair. He ________ a book. Two boys ________ on the grass. Some birds ________ in the sky. The ducks are swimming ________ the river. They are very happy. We are very happy, too.