What is it good for?与What it good for?什么区别呀?

What is it good for?与What it good for?什么区别呀? What letter is good for your health?It's______. what is good for badminton What is good for是什么意思 what good news it is! it is good for company it is good for us I live and breathe for you,what good does it? 英语翻译请翻译：Of what good is democracy if it is not for the poor? It is necessary for one to know what are good table manners 英语翻译英文歌词：War,huh,yeah What is it good for Absolutely nothing But what do you do for others?It is really a good idea to do