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.

LEADING a train
of meticulously restored
The Big Bang Theory Season 7, Episode 15

I'm the man you want
LEADING the vanguard.
Game of Thrones Season 1, Episode 8

I shot you for a good reason.
You were LEADING us into disaster.
The Big Bang Theory Season 1, Episode 6

and Jaime Lannister
LEADING our armies,
Game of Thrones Season 7, Episode 3

Either the reason is predicated on a series
of sub-reasons LEADING to regression...
The Big Bang Theory Season 2, Episode 1