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.

Fine. In the interest
of preserving OUR friendship...
The Big Bang Theory Season 5, Episode 17

in anticipation of OUR victory.
The Big Bang Theory Season 12, Episode 23

of OUR relationship,
I can put myself
The Big Bang Theory Season 5, Episode 10

I feel like that sets
a good tone for OUR wedding.
The Big Bang Theory Season 11, Episode 17

the healer in OUR group.
The Big Bang Theory Season 5, Episode 19