1)... drugs and alcohol addiction are quite spread problems among young generation.
2)... there is no gain without pain.
3)... It is hoped that economic situation will be developed during next two years.
4)... It has been decided that the entire group will visit historical museum.
5)... it’s more profitable to study abroad.
6)... Darwin’s theory of evolution was some kind of nonsense.
7)... nothing really lasts forever.
8)... such plan would never work out.
9)... human’s brain can use more than 10% of its capacity.
10)... this project is socially important.
Надеюсь, что правильно поняла задания и смогла помочь