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.

We're just so glad that
we have a STRONG family
to help us through this.
Breaking Bad Season 4, Episode 4

Boy, these drinks are STRONG!
The Big Bang Theory Season 7, Episode 1

And STRONG too. Jon knew it.
Game of Thrones Season 1, Episode 5

Mmm-hmm.
He has a STRONG kick.
Vikings Season 1, Episode 7

I know you're building a STRONG case
against Tyrion.
Game of Thrones Season 4, Episode 5