1) a. Mary; b. Sarah; c. Jane; d. Anne; e. Molly.
2) hot; lovely; interesting; happy; early; dry; famous; friendly; fat; exciting.
3) 1. is bigger; 2. is heavier; 3. are more dangerous; 4. is more difficult; 5. are hotter; 6. is more exciting; 7. are healthier.
4) 1. more; 2. the colder; 3. the most; 4. heavier; the heaviest; 5. better; the best; 6. worse; the worst; 7. the cheapest; slower;
5)
1. She thinks Science is worse than Maths.
2. Mark is the best singer in our class.
3. The most exciting day in the year is my birthday.
4. Mice are smaller than tigers and elephants.
5. Mary is the youngest person in their family.
6. Dolphins are more intelligent than hippos.
