Answer:
sense = non; nonsense
happy = un; unhappy
mind = re; remind
pert = im; impert
respect = dis; disrespect
equal = un; unequal
legal = il; illegal
fiction = non; nonfiction
prove = im; improve
frost = de; defrost
ceed = ex; exceed
lucky = un; unlucky
lead = mis; mislead
fat = de; defat
fair = un; unfair
gust = dis; disgust