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'm DEVELOPING other senses.
Money Heist Season 3, Episode 5

I'm DEVELOPING a taste for it.
Game of Thrones Season 7, Episode 2

Oh, thanks, yeah.
I'd be in charge of DEVELOPING
The Big Bang Theory Season 11, Episode 10

might provide better stimulus
for a DEVELOPING baby.
The Big Bang Theory Season 10, Episode 10

- ...for one of the drugs she was DEVELOPING.
- What happened?
The Big Bang Theory Season 8, Episode 1