Réponse :
Hello,
Exercise 2:
1) My dress in longer than yours.
2) A cat is bigger than a hamster.
3) Alan is younger than you.
4) Your bike is cheaper than mine.
5) Jo is friendlier than Liz.
Exercise 3:
1) better, than
2) more expensive than
3) more interesting than
4) harder than
5) more difficult than
6) bigger, safer than
7) colder than
8) smarter than
9) nicer than
10) funnier than
Exercise 4:
1) the youngest
2) the coldest
3) the most intelligent
4) the tastiest
5) the cutest
6) the most romantic
7) the longest
8) the most difficult
9) the worst
10) the shortest
11) the cheapest
12) the slowest
13) the most dangerous
14) the most friendly
15) the most elegant
16) the best
17) the richest
18) the fattest
19) the deepest