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.

Hey, you got to help me
get my arm into the SLEEVE.
The Big Bang Theory Season 12, Episode 24

We would have deactivated
the ace up their SLEEVE.
Money Heist Season 3, Episode 6