Young people don’t know much about the world before they ___

Young people don’t know much about the world before they ___ i don't know much about the man .can you tell me ___ (much) people didn't know much about the sun or the 怎么翻译“People don't care how much you know until they know how i don't know much about the man.can you tell me()(much)about Don’t worry too much about making ___ mistakes.They are ___ they don't know very much 英语翻译If you don't want people to know much about you,then you Many young Chinese don't hardly know about the hostory of th they are ____ about the map because they don't know the___to i don't know ___ to do with the problem ___ they are facing 英语翻译I don't know what they ___ ___ ___in the room.