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.

RIOT OFFICER: We REQUEST
your cooperation. Move back.
Westworld Season 3, Episode 8

This is all good fodder for you
to REQUEST a sit-down with Gus
Breaking Bad Season 4, Episode 8

I'm afraid
we must respectfully decline your REQUEST.
Game of Thrones Season 4, Episode 6

If you have a
legitimate REQUEST,
The Big Bang Theory Season 12, Episode 7

AMY: Wait. I have a request.
- Yes?
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- Yes?
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AMY: Wait. I have a REQUEST.
- Yes?
The Big Bang Theory Season 4, Episode 5