People do not know the value of health _______ they lose it.A.where B.to C.upon D.till

Don't know why people become so fast .Friends do not cross the dog don't you know等于do you not know么 Cherish the people who do not know how to return Cherish the people who do not know how to return Don't know his heart,not people like 改错 people don't know where do we come from Do you sometimes talk with people you don't know? Yet many people do not seem to know that memory works in the same way.同义句转换Yet _____ _____that many people don't know that memory works in the same way I do not know I do not know People know what they do 句子翻译.People know what they doThey know why they do what they doBut what they don't knowis what they do does Do you know these people? ou feel that people do not know ,again long again meaningless...翻译成汉语是什么? 用英语单词拼一个句子people,do,know,just,some,not,to,fun,how,have(.) 翻译 But they do not usually shake hands with people they know well do you know how to cherish the people,not worthy of love啥意思啊 急 英语翻译,谢绝翻译器.一They do not usually shake hands with people they know well. Sometimes we paint our faces and people do not know who we are.中文是什么? we piant our faces and people do not know who are we帮忙改错一下