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

I only have one
very small REQUEST.
Vikings Season 1, Episode 9

-Here Condor 1. Visual of the targets.
-"I REQUEST the green light."
Money Heist Season 1, Episode 4

- Hide you?
- I formally REQUEST sanctuary.
The Big Bang Theory Season 2, Episode 6

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