4 Write sentences with be going to or will.
1 I / visit / my grandparents on Sunday. I promised them.
2 I think / this invention / change the world
3 next month, / my brother / travel to Spain. He has booked a plane ticket already.
4 who / win / the competition / tomorrow / ?
5 in ten years from now, / people / live on other planets
6 tonight / we / have / a birthday party / for my brother. Do you want to come?