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.

He's smart, he's sweet,
and in the BEDROOM, whew...
The Big Bang Theory Season 6, Episode 3

We're also getting new curtains for my
BEDROOM and a dust ruffle and a duvet.
The Big Bang Theory Season 2, Episode 10

- Living room appears to be empty.
- Okay, he must be in his BEDROOM.
The Big Bang Theory Season 1, Episode 11

It's important to me that
you have the BEDROOM you want.
The Big Bang Theory Season 10, Episode 7

Why isn't it ever
Angie Dickinson's BEDROOM?
The Big Bang Theory Season 9, Episode 11