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.

to make a new friendship GROW strong.
Game of Thrones Season 4, Episode 4

Well, you GROW more gorgeous
by the minute.
Breaking Bad Season 3, Episode 11

Why don't you just let
your hair GROW out a little?
The Big Bang Theory Season 5, Episode 18

The problem comes
when they GROW up.
Money Heist Season 1, Episode 10

-What do you want to be when you GROW up?
-A cook.
Money Heist Season 3, Episode 8