1) In the city houses are taller than in the country.
2) In the city bridges are longer than in the country.
3) In the city streets are wider than in the country.
4) In the city rivers are more dirty than in the country.
5) In the country houses are smaller than in the city.
6) In the country rivers are cleaner than in the city.
7) In the country gardens are bigger than in the city.