I hope nothing has happened to them

I hope nothing has happened to them what's happened to them 's=has? I hope nothing has( ) ( ) ( )我希望他什么事也没有 Nothing happened,has been all day. I hope you'll show them to me sometime是什么意思 I hope __(them to,they can )join us 到底是nothing has happened yet.还是nothing has yet happened.请举个例子 I want to know what --------- him.A .happened B,has happened I hope nothing is wrong I can do nothing for them except to send them money,为啥不省to?e what has happened to you I has nothing,