what _____ happened ____you?a.has,with B.has,to C.is for D.is,to选哪个?为什么?

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what _____ happened ____you?a.has,with B.has,to C.is for D.is,to选哪个?为什么?
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what _____ happened ____you?a.has,with B.has,to C.is for D.is,to选哪个?为什么?
what _____ happened ____you?
a.has,with B.has,to C.is for D.is,to
选哪个?为什么?

what _____ happened ____you?a.has,with B.has,to C.is for D.is,to选哪个?为什么?
B
happen无被动语态
to 属于固定用法

B

has to
D
背会就好了
what has happened to you
Tell me what has happened.:
告诉我发生了什麽事。

b
因为这个happen的动作已经完成了 对现在造成影响用过去完成时
happen to是固定用法

B

B
这个都不知道你还学什么英国老鼠啊。