They ..... hugging.
are
The fish is .....
swimming.
They ....playing football. They .... playing basketball.
are / aren't
He ....... eating a sandwich.
isn't
The penguin is ...... hello!
saying
Homer ..... watching TV.
is
He isn't ...... He is ....
... / reading
The dog is ..... a watermelon.
riding
She ...... dancing.
isn't
The squirrel is .....
eating.