Are you watching a film?
Yes, I am.
Are you having a meal?
Yes, I am.
Is she catching a train?
No, she isn't.
Is he going shopping?
No, he isn't.
Is she having a meal?
No, she isn't.
Are they meeting friends?
Yes, they are.
Are they catching a train?
Yes, they are.
Is he taking photos?
No, he isn't.
Are they watching a film?
No, they aren't.
Are they meeting friends?
No, they aren't.
Are they going shopping?
Yes, they are.
Are you taking photos?
Yes, I am.