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.

A stain to exorcise,
to SCRUB out,
Westworld Season 3, Episode 8

and SCRUB like a housemaid,
Breaking Bad Season 4, Episode 2

seeing if you
could SCRUB it off?
The Big Bang Theory Season 12, Episode 2

I've had teams in the Mesa
SCRUB each and every floor.
Westworld Season 2, Episode 3

Not so hard. You'll SCRUB the skin off.
Game of Thrones Season 3, Episode 5