13, D
14, A
15, A
16, C
17, B
18, A
9, the most exciting
10, the fastest
11, the most popular
12, the closest
13, beautifully/ the most beautifully
14, hotter
15, worse
16, better
17, big/bigger
18, more difficult/ most difficult
19, largest
20, bigger
III,
1, her new house is smaller than her old one
2, peter is the tallest in my class
