These examples should clear up the problem. Its vs. it's The price of a gallon of gas reached its peak in the 1970s. You're Your pants zipper is unzipped. You're going to be embarrassed if you don't zip it up soon. They're going to stay at day care center until Joe picks them up.
All verbs are either in the active voice or the passive voice.
The ball was hit by Jill. But when we change those to active voice, we see who is really doing the acting in these sentences. The legislature passed the bill. Jill hit the ball. It is almost always clearer to use active voice, and usually less wordy.