1. That big pie is bigger and more expensive than this pie. (small, cheap)
=> This pie is smaller and cheaper than that big pie
2. Hoi An is more historic than Ho Chi Minh City. (modern)
=> Ho Chi Minh city is more modern than Hoi An
3. A house in the city is often more expensive than a house in the countryside. (cheap)
=> A house in countryside is cheaper than a house in the city
4. It’s usually noisier to live in the city than in the countryside. (quiet)
=> It's usually quieter to live in the live in the countryside than in the city
5. Hanoi is more polluted than Da Nang. (clean)
=> Da Nang is cleaner than Ha Noi