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.

despite your ASSUMPTION
of all the risk.
Breaking Bad Season 4, Episode 8

You're making an ASSUMPTION.
The Big Bang Theory Season 2, Episode 22

You can't make the ASSUMPTION
that I'll like the hamburgers here.
The Big Bang Theory Season 1, Episode 5

Excuse me, your entire argument
is predicated on the ASSUMPTION...
The Big Bang Theory Season 1, Episode 2

All right, my plan
is predicated on the ASSUMPTION...
The Big Bang Theory Season 8, Episode 19