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степени сравнения

1- correct

2- correct

3- correct

4- cheaper and cheaper

5- as usual

6- the more tired he becomes, the more

7- is much older than..

8- further*

9- correct

10- as expensive as..

11- correct

12- more and more bored

13- in the world

14- is the most famous..

15- nicer when he's asleep