III. WORD FORMATION (1.2 points) Write the correct forms of the words in the brackets. 17. China is the most _______________ country in the world with more than 1,4 billion people. (POPULATION) 18. According to World Air Quality, China is more _______________ than Vietnam. (POLLUTION) 19. The downtown area of Shanghai is always _______________ with hundreds of people, visitors, cars, buses and taxis. (CROWD) 20. Living in the countryside is more _______________ than in big cities. (PEACE) 21. Beijing, the capital of China, is an interesting city; it has the most popular tourist attractions and the _______________ restaurants and cafés in the country. (GOOD) 22. It’s _______________ to live in big cities than in the countryside. (NOISE)