Are they eating apples?
No, they aren't. They're riding bicycles.
Are they watching TV?
No, they aren't. They're playing soccer.
Are they playing soccer?
No, they aren't. They're watching TV.
Are they eating apples?
Yes, they are.
Are they flying kites?
Yes, they are.
Are they studying English?
Yes, they are.
Are they talking on the telephone?
Yes, they are.
Are they flying kites?
No, they aren't. They're reading comic books.