а) -er, -or teacher, editor -ism heroism
-ist scientist, artist -ant assistant
-ess actress, hostess -ence conference
-ment movement, -ty сruelty, activity
development
-ance importance, distance -ure culture
-(t)ion translation -ing building
-ity majority, complexity -dom freedom
-y difficulty, energy -ssion discussion
-ian physician, politician -sion revision
-hood childhood, -ness happiness
brotherhood
-ship friendship, leadership -ure pressure
-age marriage, passage -ness backwardness
б) re- reconstruction in- information
со- coexistence, im- impossibility
coauthor
dis- disagreement, un- unemployment
disarmament
mis- misunderstanding il- illiteracy