ПОМОГИТЕ!!! ДАЮ 55 БАЛЛА!!
15 и 16

15

1. +
2. the most difficult
3. the cheapest
4. better, harder
5. further  
6. more expensive than
7. more loudly

16

1. +  (✔)
2. tasty as  (✔)
3. more difficult than  (x) Skating is as difficult as cycling.
4. dangerous as (✔)
5. more popular than  (✔)
6. more relaxing than (✔)