Is he watching TV?
No, he isn't
Are they cleaning the house?
Yes, they are
What are they doing?
They are cleaning the house
What is he doing?
He is carrying the books
Is she climbing the steps?
No she isn't
What is she doing?
She is watching TV.
What is mom doing?
Mom is carrying the bags
Is she cleaning the windows?
Yes, she is
What is she doing?
She is climbing the ladder
Are they carrying the light?
Yes, they are
Are they washing the car?
No, they aren't