Form the degrees of comparison of the following adjectives: old, bad, cold, yellow, loud, clean, large, cosy, comfortable, green, modern, long, red, dark, good, small, interesting, diffi cult, important, easy.

old - older - the oldestbad - worse - the worstcold - colder - the coldestyellow - ???loud - louder - the loudestclean - cleaner - the cleanestlarge - larger - the largestcosy - cosier - the cosiestcomfortable - more comfortable - the most comfortablegreen - ???modern - more modern - the most modernlong - longer - the longestred - ???dark - darker - the darkestgood - better - the bestsmall - smaller - the smallestinteresting - more interesting - the most interestingdifficult - more difficult - the most difficulteasy - easier - the easiest