'Get' is probably the most versatile, all-purpose English verb of all (even though many traditional English teachers prefer never to see it in written work, where there's nearly always a clearer alternative).
Only ONE of these sentences is NOT a reasonable example of 'get' in action; which one?
It's obviously not very likely that you would get on with someone after a party, if you never got off with them in the first place.
Three minutes after getting offstage, he had got his costume off and was signing programmes for members of the audience.
By the time I had got off the phone and got back on with my work again, the children had got off the grass where they had been playing.
He would have got away early on Friday; but with so much work on, he didn't think he'd ever get away with it.