• Are they eating at the moment? No, they aren't.
• Are you crying? Yes, I am.
• Is Mary cooking? No, she isn't.
• Is Paul playing on the computer? Yes, he is.
• Are your freinds doing the homework? No, they aren't.
• Is Jane writing a letter? Yes, she is.
• Are they making noise? No, they aren't.
• Is Raul doing his homework? Yes, he is.
• Are they washing the dishes? No, they aren't.
• Are Paul and Raul waiting for you? Yes, they are.
