comparison diver

http://www.englishexercises.org/makeagame/viewgame.asp?id=2070
http://www.ego4u.com/en/cram-up/grammar/adjectives-adverbs/adjectives/compare-exercises
http://www.ego4u.com/en/cram-up/grammar/adjectives-adverbs/adjectives/exercises
http://www.adelescorner.org/grammar/comparatives/comparatives2.html
http://www.learnenglish.de/Games/Adjectives/CompSup.htm
http://inglesnanet.com/grammar/superl.htm