Английский язык! Помогите пожалуйста!!!

Английский язык! Помогите пожалуйста!!!Закончите следующие предложения, обращая внимание на употребление союзов FOR и SINCE. 1) India has been an independent country since/for ... 1945; the end of World War II; the last five decades; more than 50 years. 2) The company has produced some new materials since/for ... 2005; last new machines were bought; the last five years; last year.