What are you doing?
I'm writing.
What are you doing?
I'm talking.
What are you doing?
I'm studying.
Is he studying?
Yes, he is.
What are you doing?
I'm drawing.
Is she laughing?
No, she isn't.
Are you singing?
No, I'm not.
What are you doing?
I'm drinking.
Are you eating?
Yes, I am