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.

Drilling that DOOR will take longer
than an hour. Maybe more than two.
Money Heist Season 3, Episode 4

-Which DOOR?
-The DOOR you told me about
Money Heist Season 1, Episode 7

They plan on rolling me
out the front DOOR?
Breaking Bad Season 3, Episode 11

Forget to rinse the sink?
Talk to him through the bathroom DOOR?
The Big Bang Theory Season 2, Episode 1

(DOOR CLOSES)
Game of Thrones Season 5, Episode 7