Choose the correct words:
1)People will go on holiday in space one day.I'm sure it'll/it's going to be possible.
2)I've already spoken to Anna. We'll/We're going to go on holiday to New York togetger!
3)In 100 years'time,l think we'll/we're going to get all our energy from the sun.
4)Look,that plane is flying vere low. It'll/lt's going to land near here!​