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.

The system wouldn't
have a COPY of you.
Westworld Season 2, Episode 10

in each COPY.
Westworld Season 2, Episode 10

Copy that. Over.
The Big Bang Theory Season 6, Episode 2

That DVD. Every single COPY.
Breaking Bad Season 5, Episode 14

that's a COPY of something
that was on pay cable.
The Big Bang Theory Season 12, Episode 24