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.

It stays CLOSED. That's an order.
Breaking Bad Season 3, Episode 10

The registers are CLOSED.
The Big Bang Theory Season 7, Episode 19

Should I explain to you the meaning of
a CLOSED door in a whorehouse, brother?
Game of Thrones Season 1, Episode 1

This needs to be cleaned and CLOSED.
Game of Thrones Season 3, Episode 1

swatting at each other
with their eyes CLOSED.
The Big Bang Theory Season 5, Episode 10