3 ESO - Comparatives and Superlatives

http://www.englishexercises.org/makeagame/viewgame.asp?id=6009

http://www.ego4u.com/en/cram-up/grammar/adjectives-adverbs/adjectives/exercises

http://www.myenglishpages.com/site_php_files/grammar-exercise-grammar-comparatives-superlatives.php

http://s.mound.free.fr/skyblues67/comparing/trig&family1.htm