6 Write the superlative form in your notebook. 1. Iguazu Falls is ... (impressive) waterfall in the world. 2. New York is... (exciting) city in the world. 3. The River Nile is ... (long) river on Earth. 4. The Amazon Rainforest is ... (big) rainforest in the world. 5. The Vatican City is ... (small) country in the world. 6. Bondi Beach is ... (popular) beach in Sydney. 7. The Atacama Desert is ... (dry) place on earth. 8. The Yungas Road in Bolivia is ... (dangerous) road in the world.