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.

...and have CEREAL with Mrs. Vartabedian.
The Big Bang Theory Season 2, Episode 10

Really? I've never once been invited
to have CEREAL with Mrs. Vartabedian.
The Big Bang Theory Season 2, Episode 10

...poured a bowl of CEREAL,
added a quarter cup of milk...
The Big Bang Theory Season 1, Episode 7

I mean, holding a meeting to decide
what breakfast CEREAL we should buy.
The Big Bang Theory Season 9, Episode 21

Okay, this CEREAL
has lost all its molecular integrity.
The Big Bang Theory Season 1, Episode 7