People never know what happened?

People never know what happened? You never know what people have up their sleeves是什么意思? people will never know what will happen in the future Internet ______ people to get to know what happened all over by now we _____ what has happened to those people A has know we never know what will happen to people in ten years.对in te what if i never know I will never forgot what happened in the afternoon 是什么意思 What happened Really I seem never heard before Never get it down no matter what happened是什么意思 do you know -------? a.what he happened b.what happened to h Do you know what was happened to him.