The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

No, we must ARRANGE better terms
with the Iron Bank.
Game of Thrones Season 5, Episode 4

I guess I'll call you
and we'll ARRANGE another evening.
The Big Bang Theory Season 2, Episode 2

You gonna ARRANGE to pay us
more than Queen Cersei...
Game of Thrones Season 7, Episode 5

I send units to the area
and ARRANGE for an intervention team
Money Heist Season 1, Episode 13

Fring was able to ARRANGE...
Breaking Bad Season 5, Episode 11