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.

Drogon, we need to RETURN.
Game of Thrones Season 5, Episode 10

It would be an honor to RETURN your love,
Game of Thrones Season 2, Episode 10

They'll pray for my RETURN?
Game of Thrones Season 2, Episode 7

I have to RETURN the helicopter. My father...
What did you do?
The Big Bang Theory Season 8, Episode 22

They want to RETURN home
and gather the harvest before the crops turn.
Game of Thrones Season 2, Episode 5