Complete the questions and answer them. 1)you have already had dinner, 2)your friends have had a football game 3)you have never built a sandcastle, 4)yor haven't found a very old book, 5)your friends have sent you an e-mail,

You have already had dinner, haven't you?  Yes, I have.
Your friends have had a football game today, haven't they?  No, they haven't.
You have never built a sandcastle, have you?  Yes, I have.
You haven't found a very old book, have you?  No, I haven't.
Your friends have sent you an e-mail, haven't they?  Yes, they have.