1. Her water bill is 100000 dong. our water bill is 120000 dong
=> Her water bill isn't as expensive as our water bill.
2. Television doesn't cost as much money as internet.
=> Internet is cost much money than television.
3. No provinces in Vietnam are larger than Nghe An.
=> Nghe An is the largest province in Vietnam.
4. I've never attended a more joyful festival.
=> It's is the best joyful festival that I've attended.
5. Going to the zoo is interesting, but riding to the countryside is more interesting.
=>Riding to the countryside is more interesting than going to the zoo.