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.

I've never been
the DOMESTIC type.
Westworld Season 2, Episode 4

Prescription, nonprescription, foreign,
DOMESTIC, experimental.
The Big Bang Theory Season 3, Episode 15

I'd get called on DOMESTIC disputes
all the time.
Breaking Bad Season 3, Episode 12