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.

I forget, which mental HOSPITAL
are you guys registered at?
The Big Bang Theory Season 11, Episode 10

And they took me to a military HOSPITAL.
Money Heist Season 3, Episode 7

L... Let's see.
I checked with every HOSPITAL
within 50 miles.
Breaking Bad Season 2, Episode 2

- I'll get the HOSPITAL bag.
- I'll pull the van up.
The Big Bang Theory Season 10, Episode 11

I had my lobectomy at this HOSPITAL.
Breaking Bad Season 3, Episode 8