What are they doing?
They are playing basketball.
Are they doing judo?
No, they aren't.
What is she doing?
She is skateboarding.
What is he doing?
He is skipping.
What is she doing?
She is cycling.
Are they playing table tennis?
No, they aren't.
Is he surfing?
Yes, he is.
Is it sailing?
Yes, it is.
What are they doing?
They are ice skating.