Read and remember.
Have you seen the film? − No, I haven’t.
Have they bought any souvenirs? − Yes, they have.
Have they been to the Science Museum? − Not yet.
Has Ben ever flown a kite? − Yes, he has.
Has Angela been to the cinema recently? − Yes, she has.
Has Tim taken part in a concert? − No, he hasn’t.
Has the dog found the ball? − No, it hasn’t.