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.

Leonard and I
often use our COMMUTE time...
The Big Bang Theory Season 2, Episode 5

This is my office.
Which makes for a great COMMUTE.
The Big Bang Theory Season 12, Episode 7