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.

It has AVOCADO on it.
She's allergic to AVOCADO.
The Big Bang Theory Season 8, Episode 3

Oh, and every other day,
check the water level on the AVOCADO pit.
The Big Bang Theory Season 10, Episode 4

It has AVOCADO on it.
She's allergic to AVOCADO.
The Big Bang Theory Season 8, Episode 3

Economic anxiety, too much
AVOCADO toast, who cares?
The Big Bang Theory Season 12, Episode 9

And how about you keep our AVOCADO plant?
The Big Bang Theory Season 10, Episode 10