Ответ: 3/ heavier and heavier6/ colder, yellower1. large2.larger3.biggest4.largest5.oldest6.great7.most beautiful
Ответ: 3. As he went on, the box became (heavier) and (heavier). 6. It is autumn. Every day the air becomes (colder), the leaves (yellower) 1. Russia is a very (large) country. 2. Which is (larger): the United States or Canada? 3. What is the name of the (biggest) port in the United States? 4. Moscow is the (largest) city in Russia. 5. The London underground is the (oldest) in the world. 6. There is a (greater) number of cars and buses in the streets of Moscow than in any other city of Russia. 7. St. Petersburg is one of the (most beautiful) cities in the world.