他不该把全部薪水都赌在马赛上。

He shouldn't have ___gambled his whole salary on the horse race.

他冒着风险投资了这家初创公司，希望能获得高额回报。

He ___gambled by investing in the startup, hoping for high returns.

他昨晚在牌桌上输了一大笔钱。

He lost a lot of money ___gambling at the poker table last night.