Choose the correct options.

1 A:Are you ready to order?
B:I think so. I am having / will have a burger, please.

2 We are staying / will stay with our grandparents over the summer; we’ve already got the tickets.

3 1 am going / will go to the doctor's tomorrow morning. I've got an appointment.

4 I don't have to work tomorrow, so I am going to spend / am spending the whole morning in bed!

5 I can't talk now – I am going phone / will phone you back.