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.

Option B: Brandon goes up
to the PENITENTIARY
Breaking Bad Season 2, Episode 8

Judging by my e-mail, a number of prisoners
at the Michigan State Penitentiary found it.
The Big Bang Theory Season 1, Episode 17