Ответ:

big - bigger - the biggest

heavy - heavier - the heaviest

short - shorter - the shortest

dirty - dirtier - the dirtiest

clean - cleaner - the cleanest

near - nearer - the nearest

bad - worse - the worst

famous - more famous - the most famous

little - less - the least

much - more - most

clever - cleverer - the cleverest

good - better - the best

expensive - more expensive - the most expensive

cheap - cheaper - the cheapest

important - more important - the most important

pale - paler - the palest

hot - hotter - the hottest

beautiful - more beautiful - the most beautiful

large - larger - the largest

practical - more practical - the most practical

fat - fatter - the fattest

early - earlier - the earliest

pretty - prettier - the prettiest

happy - happier - the happiest

bright - brighter - the brightest

dark - darker - the darkest

dry - drier - the driest

flat - flattеr - the flattest

fresh - fresher - the freshest

full - fuller - the fullest

quick - quicker - the quickest

late - later - the latest

nice - nicer - the nicest

rich - richer - the richest

sad - sadder - the saddest

thin - thinner - the thinnest

thick - thicker - the thickest

wet - wetter - the wettest

weak - weaker - the weakest

early - earlier - the earliest

funny - funnier - the funniest

easy - easier - the easiest

lazy - lazier - the laziest

ugly - uglier - the ugliest

comfortable - more comfortable - the most comfortable

quiet - quieter - the quietest

far - farther - the farthest  (говорим о расстоянии)    

far - further - the furthest  (говорим о времени)