1. The air in the countryside is healthier than the air in the city.
2. People in the countryside work more hardly than people in the city.
3. This paddy fields is larger than five stadiums.
4. A cow ploughs worse than a buffalo
5. Mai speaks English more fluently than her sister.
6. Summer is hotter than autumn.
7. Life in the countryside is more peaceful than life in the city.
8. An ox is stronger than a horse.
9. Quang writes more carefully than his friends.
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