IX. Complete the sentences using the correct forms of the adjectives in brackets.
1. The (high) higher the cost of living in the city, the (more) people need to earn to afford it.
2. The (modern) the buildings, the (less) character the historic city center might have.
3. The (many) people that live in the city, the (greater) the demand for public services.
4. The (many) green spaces available, the (good) the quality of life in the city.
