It is much easier to talk about social change than to .

A cough is usually nothing to worry about unless it lasts for ten days ____.

Listen to the two girls by the windowWhat language ________?

I hate studying, and I want to dropout of school.—Quit halfway ________. Oh, sorry, Ididn’t mean to be rude.

There is a new problem involved in the popularity of private cars ____________ road conditions need ____________.