5
1 cleaner
2 colder
3 the most expensive
4 worse
5 longer
6 better
7 more polite
8 the oldest
9 more intelligent
10 the oldest
6
1 the biggest building
2 the strangest person
3 narrower
4 the oldest
5 the worst
6 better
7 more cheerful
8 longer
9 more difficult
10 the easiest
11 harder