I was born in Chicago.
wow, i heard Chicago has over 2.7 million residents
I haven't lived there since I was a baby, but I go visit sometimes and there are lots of people.
wow, i heard The region is home to more than 400 major corporate headquarters
That is not surprising. It is a very busy place.
yes, it is really a busy place due to its estimated population of 9.5 million people
There are so many fun things to do and see there.
really, i think you are right, coz It comprised the Illinois counties of Cook, DuPage, Kane, Lake