Choose the most suitable grammar form.
1) Ann is visiting New York. She will / is going to see the Empire State Building.
2) It is too cold in the room. I am going to / will close the window.
3) Tonight we will have / are having dinner with the Smiths.
4) Somebody is at the door. I am going to / will open it.
5) Finally we bought the tickets! We are flying / will fly to Greece on Friday.
6) Can’t you hear? The phone is ringing! Are you going to / will you answer it?
7) She will study / is going to study history at the university next year.
8) Look! It’s sunny outside. I am going to / will wear my favourite sunglasses.
9) We haven’t got any oranges. Are you buying / Will you buy some?
10) Look at those big black clouds. It is definitely going to / will rain.