b1 : Use the suggestions to write sentences of comparative :
1. Your brother / optimistic / you
2. Air / countryside / healthy / city
3. People / countryside / work / hard / city
4. This paddy field / large / five stadiums
5. A cow / plough / bad / a buffalo
6. Mai / speak English / fluent / her sister
7. Summer / hot / autumn
8. Life / countryside / peaceful / city
9. An ox / strong / a horse
10. Quang / write / careful / his friends
2, AIR POLLUTION IN THE COUNTRYSIDE IS HEALTHIER THAN IN THE CITY
SUMMER IS HOTTER THAN AUTUMN