A) 1. Listen! The birds are singing in the garden.
2. We are going for a walk.
3. She is making a pie.
B) 1. We are not listening to the teacher.
2. I am not writing on the paper.
3. You are not learning English Grammar.
C) 1. Is he going to the cinema?
2. Are the horses running very fast?
3. Is Mary helping her mother to cook?