1 younger
2 much better
3 worse
4 warmer
5 busy
6 coldest
7 more interesting
8 more difficult
9 heavy
10 easier
11 the highest
12 quicker
13 older
14 the most simple
15 stupid
16 the most beautiful
17 narrower
18 the fattest
19 the hottest
20 the most attentive
21 older, older
22 the nearest