Let's make a bet... 咱们来打赌……
1. If you don't believe. Let's make a bet.
2. Let's make a bet. But I'll surely win.
3. Let's make a bet on the election.
A: Do you think Tom will be elected president?
B: No, I think Harry will get it.
A: Let's make a bet on who gets it.
B: OK, loser buys pizza tomorrow night.