Answer:
agree - disagree - dis
sense - nonsense - non
fire - prefire - pre
active - unactive - un
secure- insecure - in
behave - misbehave - mis
violent - nonviolent - non
honest - dishonest - dis
fair - unfair - un
possible - impossible - im
certain - uncertain - un
perfect - imperfect - im
Explanation:
Hope it helps :)
