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.

There’s an ATTIC. It’s amazing.
Money Heist Season 1, Episode 13

Oh. well, an ATTIC might be
even better, as long as it's dry.
Breaking Bad Season 4, Episode 3

in the ATTIC so you can have
that closet for clothes.
The Big Bang Theory Season 5, Episode 3

Well, if you're looking
for storage space,
there's an ATTIC area.
Breaking Bad Season 4, Episode 3