In the very early morning the park is taken over by people doing tai-chi exercises.
There are crowds doing tai-chi in the park in the morning.
No one does tai-chi in the park in the morning.
I agree.
Two boys are jumping from the boat into the ocean.
The black cat with round ears is holding a toy in its mouth.
the boy is sleeping at home
Four people are playing hopscotch.
There is a lot more you can do for them besides filling out the card.