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.

- Happy NOW?
- I'm on a cloud.
The Big Bang Theory Season 3, Episode 14

Now you are being rude.
Game of Thrones Season 1, Episode 6

and NOW I have a cleaning lady,
The Big Bang Theory Season 10, Episode 8

Gustavo Fring, your boss, NOW.
Please.
Breaking Bad Season 4, Episode 5

Well, I'm e-mailing him right NOW.
The Big Bang Theory Season 6, Episode 22