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   It is sunny today. My mother, my father and I go to a park. We like the park very much. It is very big and beautiful. There _____ many trees and flowers in it. Many people like to go there. Look! An old man is _____ the chair. He is reading a book carefully. Two boys are jumping on the ground. _____ mothers are talking with each other. Two birds _____ in the sky. The ducks are swimming in the river. They are very happy. What is the dog _____? Oh, it is running after a cat.