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.

not an attack
by some morning ZOO shock jock.
The Big Bang Theory Season 7, Episode 10

We go to the ZOO all the time.
The Big Bang Theory Season 5, Episode 12

What emergency happened at the LA Zoo?
The Big Bang Theory Season 10, Episode 17

I thought it smelled
like a petting ZOO in here.
The Big Bang Theory Season 10, Episode 8

Yes. He's new at the ZOO.
The Big Bang Theory Season 2, Episode 13