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.

and all OUR Northern sons.
Game of Thrones Season 2, Episode 1

Neither Joffrey nor any of his men
shall set foot in OUR lands again.
Game of Thrones Season 2, Episode 1

Is it what to get me
for OUR anniversary?
The Big Bang Theory Season 12, Episode 21

Our friendship?
Money Heist Season 1, Episode 11

reassess and decide
OUR next move, if any.
Breaking Bad Season 2, Episode 5