Ответ:

2. A: Rome is the most famous city in Italy

B: Yes, but Venice is the most beautiful Italian city

3. A: New York is the busiest city in USA

B: Tes, and it is the coolest city in the world

4. A: Athens is the most dangerous city in Greece

B: Yes, but Greece is one of the safest countries in Europe

5. A: Canberra is one of the modernist cities in Australia

B: Yes, but it is the most boring city in the country

6. A: London is the most exciting city city in Britain

B: Yes, but it is the most expensive city in the country.