3 grandes phrases complète et constructrive avec Going to

1) They are going to play a new car,next year.
2)Get back!the bomb is going to explode.
3)I think it is going to rain."I just feel drops"

I was going to the supermarket but I find my best friend on my way who asked me if I could help her. You were going to go to Sydney without me? We said that we must to go there together! You shouldn't be going in your maths class? It's in the other way!