Ответ:

1. taller than

2.better

3.the most dangerous

4.a bigger

5.heavier than

6.thinner than

7.slower than

8.the nicest

9.the best

10.cheaper than

11.taller than

12.easier than

13.nicer than

14.better than

15.the best

16.more dangerous

17.more serious

18.smarter than

19.the most expensive

20.the best

Объяснение:

это правильно.