Ответ:

1. When I grow up, I am going to play guitar in a rock group!
2. Rick and Mark are going to start going to the gym twice a week.
3. Lauren is going to tell her mum about what happened?
4. I am going to look on the Internet for information about snowboarding.
5. No, Nadine isn't going to invite everyone from class - just her close friends.
6. Harry is going to be ready on time or not?
7. Careful! You are going to break something with that ball! Go outside!
8. I am going to lie down for half an hour. Call me at six o'clock.