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.

The ELEMENT was found
because of you,
The Big Bang Theory Season 7, Episode 6

a method for synthesizing a new
stable super-heavy ELEMENT?
The Big Bang Theory Season 7, Episode 10

negotiating a robbery,
the Professor was in his ELEMENT."
Money Heist Season 1, Episode 6

But the Chinese team
found the ELEMENT.
The Big Bang Theory Season 7, Episode 10

but they find
the ELEMENT anyway.
The Big Bang Theory Season 7, Episode 10