Ответ:

1. Comparative form

a) older than

b) better than

c) more afraid ... than

d) nicer than

e) better than

f) bigger than

g) smaller than ... bigger than

2. Superaltive form

a) the prettiest

b) the worst

c) the highest

d) the best

e) the cleanest

f) the most clever / the cleverest

g) the most expensive