Answer:
1.) My sister thinks she's smarter than me, but I don't agree.
2.) Avatar is probably the worst film I've seen.
3.) What is the wettest month of the year in England?
4.) Do you think the Harry Potter films are better than the books?
5.)Who is the most powerful person in your country?
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1. older
2. the funniest
3. the worst
4. long
5. more difficult
6. fast
7. the most beautiful
8. bigger
9. happiest
10.further
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1-This is the cheapest table in the store.
2-Sue's cookies are not as good as mine.
3-Football is more popular than basketball.
4-This dress is a lot more expensive than the black dress.
5- Sue speaks faster than her sister.