In the future, we won't live in small towns, instead,
I think we will live in big cities.
I hope I'll work in a big bank and
I'm sure my friends won't live in the same town as me. We will all live to be 120 years old, but
I'm certain I won't make it to that age. because I like McDonalds too much.
What do the bold words mean? Why were they used?