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2.the most intelligent
3.Better
4.Bigger
5.The worst
6.Three, five, eight,twelve, thirty
7.fifteenth of February
second of September
twenty first of May
eighteenth of March
8.eighteenth zero one
nineteenth fifty seven
twenty zero three
thirteenth zero zero
9.dangerous-more dangerous, the most dangerous
good-better,the best

2. c
3. a
4. a
5. a
6. third, fifth, eighth, twelfth, thirtieth
7. the fifteenth of february, the second of september, the twenty-first of may, the eighteenth of march
8. eighteen hundred and one, nineteen fifty seven, two thousand and three, thirteen hundred
9. more dangerous, the most dangerous; better, the best