Complete the sentences.1.Big cities are (dangerous)................that small

Complete the sentences.
1.Big cities are (dangerous)................that small cities
2.Travelling by plane is (boring).................than by train
3.Cities now are (exciting)..............,,,,,,than before
4.Astana now is (important).................than it was before
5.Now Astana is (beautiful)................than it was in 1830.
Помогите пожалуйста)заблаговременно спасибо