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.

You set 'em up, I KNOCK 'em down.
Good job.
The Big Bang Theory Season 10, Episode 17

No KNOCK? What's the fracas?
The Big Bang Theory Season 12, Episode 22

As soon as we KNOCK down that gate,
we're going in with all the troops.
Money Heist Season 3, Episode 8

(KNOCK on door)
The Big Bang Theory Season 5, Episode 1
![[stammers] It wouldn\'t
just knock Pemberton
[stammers] It wouldn\'t
just knock Pemberton](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
[stammers] It wouldn't
just KNOCK Pemberton
The Big Bang Theory Season 12, Episode 21