You have to work hard ..... the good of society. We should all try to be productive members and we will succeed. (*) at (*) for (*) by (*) to
This is a companion discussion topic for the original entry at https://english.best/questions/18463,you-have-to-work-hard-___-the-good-of-society-we-should-all-try-to-be-productive-members-and-we-will-succeed/