Ex10:
1. The United States is bigger than Great Britain
2. December is longger than Ferbuary
3. England is warmer than California
4. Christie is older than Sam
5. A dog is heavier than a cat
6. A film is more interesting than a play
7. She is more talkative than her sister
8. A bed is more comfortable than a chair
9. My caculator is more expensive than yours
10. The exercise is more difficult than that one
12. The girls is shorter than the boy