to be - simple present, They are, they're

They are, they're They are nurses. They're nurses. What are they? They are nurses. They're nurses. Are they nurses? Yes, they are nurses. Yes, they're nurses. They are not nurses. They're not nurses. They aren't nurses. What are they not? They are not doctors. They're not doctors. They aren't doctors. Are they not nurses? No, they are not nurses. No they're not nurses. No they aren't nurses.