помогите пожалуйста!Номер 3.Заранее спасибо там ровно 6 предложений

Roman is writing a letter. No, he isn't.
What are the chefs doing? They are making pizza.
You are answering the phone. Yes, you are.
What is the mechanic doing? He is fixing my car.
You are working outside today. No, you aren't.