what's happened to them 's=has?为什么不是have 是them 为什么不是what've happened to them

happen用法what's happened to you What's happened toyou what happen to you what's happened to you what happened to you和what's happened to you的区别那个对? what happened to sb和what's happened to sb区别 是What happened 还是what’s happened what happened=what's happened吗? --I haven't seen Mike for some time,what---to him?--He's got crazy and has ---hospitalA,should have happened,come inB,can have happened,ended inC,could have happened,come inD,must have happened,likely选哪个?为什么? what happened to 和what happened What Happened to Us Dear,what happened to what happened to she what happened to him? what happened to what happened to the what happened to Tom's car?变为同义句 what's happened to them 's=has?为什么不是have 是them 为什么不是what've happened to them I don’t know what ___ last night.用he happened 还是happened to him 为什么 didn't know what ___ to her last night.A.was happened B.happen C.happened D.is happened what happened to you的同义句what ___ ___ to you?what's ___ ___you?