1. There is no doubt whatever about it.
2. I'll bet my bottom dollar that John comes late.
3. My guess is that it will rain tomorrow.
4. The chances are you won't have to pay.
5. I wouldn't be surprised if he got married again soon.
6. It's highly unlikely we'll be invited.
7. The company will do better next year, I imagine.
8. It's out of the question to leave the country without a passport.