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.

I don't need a VACATION.
The Big Bang Theory Season 5, Episode 16

You deserve a quick VACATION.
Money Heist Season 3, Episode 7

I'm on VACATION.
The Big Bang Theory Season 5, Episode 16

It's like a VACATION
for your teeth.
The Big Bang Theory Season 5, Episode 19

But it's our last chance to take
a VACATION that's just the two of us.
The Big Bang Theory Season 10, Episode 5