The word 'wager' is both a verb and a noun. Example sentences:
Are you willing to wager your house on this? (verb)
That is a hefty wager for someone of modest means. (noun)
I had to talk to him about his work.
Describe what is your " work ethic"
edit your work
I was inpress by your work.
I work very hard.
It depends how you use it. If you use it after something it can be correct. But being in a sentence by itself isn't correct.
She work erratically.
His work of art was praiseworthy.
Comence with your work men!
i will complete my work
There was flexibility in his work schedule.
Example sentence - His missionary work was great.