bet on
verb- To wager that (something) occurs. · Mary liked to bet on red in roulette.
- To wager that (someone or something) wins a contest; especially a race or bout.
From the library
She knew that all Avonlea junior was wondering which would come out first; she even knew that Jimmy Glover and Ned Wright had a bet on the question and that Josie Pye had said there was no doubt in the world that Gilbert would be first; and she felt that her humiliation would be unbearable if she failed.
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