What is the most pure thing in the world?

What is the most pure thing in the world? What is the most beatiful thing in the world What thing is in the world the most beautiful?Answer me in E 英语翻译What is the most important thing in the world?I think it what is the most important thing in the world 英语谜语答案 What is the most important thing to you in the world why? Is friendship the most important thing in the world?why? money,it is the most important thing in the world Which letter is the most importent thing in the world? the most important thing in the world What is the greatest thing in the world? What is the biggest thing in the world?