I'm in the park. I can see some children. They ...... playing volleyball. There's my friend Greg! He ...... reading a

1) I\'m in the park. I can see some children. They are playing volleyball. 2) There\'s my friend Greg! He is reading a book. 3) The girl is eating a sandwich. 4) The boy and the dog are playing with a ball. They can\'t see me because I am sitting in a tree. 5) What are you doing? Are you listening to me?