2. a)
1 We stopped in the worst hotel in the city.
2 His teachers say he is the best student at school.
3 This is fastest transport I've traveled by.
4 Many people say that Polessye is the most beautiful part of Belarus.
5 For me, July is the most wonderful month of the year.
6 What is the tallest building in the world?
7 What is the highest mountain on Earth.
8 Brazilian scientists say that the Amazon is the longest river on the planet.
2. b
1 The Nile is shorter than the Amazon now.
2 My hair is longer than Sharon's.
3 In spring the days get longer , the nights get shorter and the days get warmer.
4 Yan's marks in English are better than his friend's.
5 As for me, the underground is even more comfortable than the taxi.
6 We're twins, but my brother is 5 minutes older than me.
7 Everest is more than 200 meters higher than K2.
8 Belarusian is easier to learn for me than Russian.
3.
1 the most beautiful
2 colder
3 the oldest
4 best
5 the most dangerous, more dangerous
6 more beautiful