Ответ:
1. I don't think will be famous when I'm older
2. I think the world will get hotter in the future
3. I bet that our team won't win the match
4. I imagine that more people will have cars
5. I'm pretty sure that it won't rain this afternoon
6. I'm pretty sure that we will have a test tomorrow
7. I think that he won't like the present
8. I don't think it will snow this winter
9. I bet that she won't remember my birthday
10. I reckon that computers won't be expensive in the future