1. Your brother/ optimistic/ you
=> Your brother is more optimistic than your
2. Are/ countryside/ healthy/ city
=> Are people in the countryside healthier than people in the city?
3. People/ countryide/ work/ hard/ city
=> People in the countryside work harder than people in the city
5. A cow/ plough/ bad/ buffalo
=> A cow ploughs worse than the buffalo

6. Mai/ speak English/ fluent/ her sister
=> Mai speaks English more fluently than her sister
7. Summer/ hot/ autumn
=> Summer is hotter than autumn
8. Life/ countryside/ peaceful/ city
=> Life in the countryside is more peaceful than life in the city one
9. An ox/ strong/a horse
=> An ox is stronger than a horse
10. Quang/ write/ careful/ h/ is friends
=> Quang writes more carefully than his friends