Answer:
kellen probably realised that he was acting a fool, and had a bad attitude, so he changed his ways of behavior in class, and decided to get his act together
Explanation:
tbh idk how the heck im suppposed to answer this so there you go, if its wrong.. i guess just blame it on me
There is only one sentence which needs a semicolon added to be correct, and that is <span>5) Water is not everywhere it's miles away.
As you can see, the way this sentence is written, something seems wrong - words are just mixed around incoherently. This is why we need a semicolon to make things more accurate: Water is not everywhere; it's miles away. </span>