what if you know you could not fail

If you know what will you do 翻译：if you know what I mean.Back to you. what if you know you could not fail If you don't know what you want是什么句型? what if you know you could not fail what do you know what you know you know what i Do you know what you know what i What You Know 歌词 You Know What 歌词 Do you know what? I don't know if you know what I known.I believed that you can believe what I believed是什么意思? if you know what's good for 原句子是：Purple Stuphif you know what's good for ya You will never know what is poverty if you have no gently man experience? if you know an earthquake is coming ,what will you do? If you mumble it looks like you don't know what to say