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.

That's EXACTLY who I am.
Game of Thrones Season 3, Episode 1

This place looks EXACTLY the same.
Breaking Bad Season 2, Episode 12

What EXACTLY are subatomic particles?
The Big Bang Theory Season 3, Episode 10

This is EXACTLY what she wants,
Game of Thrones Season 7, Episode 6

Mike, tell me now
EXACTLY what is going on.
Breaking Bad Season 4, Episode 5