Вопрос по английскому языку:

Полчаса жду плиз
Упражнение 3. Read what a boy is saying. Write in am, is or are. A) I'm in the park. I can see some children. They ____ playing volleyball. There's my friend Greg! He ____ reading a book. The girl ____ eating a sandwich. The boy and the dog ____ playing with a ball. They can't see me because I ____ sitting in a tree. What ___ you doing? ____ you listening to me? B) Look! The children ____ jumping. The cat ____ sleeping now. My friend and I ____ not dancing now. Dave ___ reading now. Look! I ___ swimming.