You have done something useful to i( ) the environment

What would you have done What Have You Done 歌词 What would you have done what have you done today what have you done lately? how could you have done What have you done recently? what have you done this you have done for us.have done是什么 what you have done for us.have You have done me a great service.done? 现在完成时么 Have you done your homework yet? What excellent work you have done!翻译 What have you done?怎么回答? Look what you have done伴奏 What have you ever done?怎么回答? smart you have done a good job What have you done?怎么回答?