What are they doing?
They're running.
What are they doing?
They're playing volleyball.
What are they doing?
They're playing tennis.
They ..... swimming.
are
He is ..... gymnastic.
doing
He is ...... a ball.
catching
He's .... a ball.
bouncing
They ..... playing ping-pong.
aren't
They .... playing basketball.
aren't
Penguins are good at ....
swimming
Kangaroos are good at ....
jumping
Cheetahs are good at ....
running
