A. very heavy B. much heavy C. heavier
A. far B. farther C. farthest
A. very rich B. much richer C. the richest
A. clean B. the cleaner C. the cleanest
A. the busiest teacher B. the busiest teachers C. the busy teachers
A. heavy B. heavier C. the heaviest
A. small B. smaller C. the smallest
A. very ill B. even worse C. the worst
A. more and more interesting B. interesting and more interesting C. more interesting and more interesting
A. young B. the younger C. the youngest
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