Составить предложения, 20 : ) 1)instruments/means/well/a/practiking/years/hard/for/musica/playing. 2)cities/be/reduce/level/big/what/done/to/pollution/in/should 3)teach/it/children/since/is/good/necessary/to/manners/years/early

1) Playing a musical instrument well means hard practicing for years
2) What should be done to reduce pollution level in big cities?
3) It is necessary to teach children good manners since early years