The city of Guangzhou wins transport prize

China has the 1. ____ \(large\) population in the world and its capital city, Beijing, has some of 2. ____ \(bad\) traffic problems. A few decades ago, China’s streets weren’t as 3. ____ \(polluted\) as they are now because most people rode bicycles. But in modern China, cars are selling 4. ______\(fast\) than in the USA.

However, one city in China recently received a prize for its transportation system from the Institute for Transportation and Development Policy \(ITDP\). The ITDP works with cities to make city life 5. ______\(good\). This year it gave the city of Guangzhou a prize because it has one of the 6. _____ \(good\) public transport systems, not only in China, but worldwide. The system transports 800,000 people a day and runs on time. And bicycles are still as 7. ______ \(popular\) as ever because of the extensive network of bicycle paths. It all means the air in Guangzhou is much 8. ______ \(clean\) than in other cities.

• polluted
• more polluted
• the most polluted
• less polluted