1)Has mum cooks barbecue today? -No, she hasn't. 2)Have they stay at home this evening?-Yes, they have. 3)Has Susan talks to her parents on Skype?-Yes, she has. 4) Has she works as a doctor since August?-Yes, she has. 5) Have you do your homework for today?-No,I haven't. 6) Have they paint your room blue?-Yes, they have.