1. Global warming is the biggest problem facing the world.
2. It's becoming harder to find a job nowadays.
3. Robert is definitely the best student in the college.
4. Jenny feels much healthier since she started that diet.
5. Life in London is more expensive than in small towns.
6. Steve is. the worst player in our basketball team.
7. The earlier we leave, the sooner we'll arrive.
8. Helen seems much happier today than yesterday.
9. Fewer people like living in the city now.
10. China has the largest population in the world.