Ithinkthisistheworstthing____

发布时间:2020-07-28 12:36:40

I think this is the worst thing _________ happened to me.A.thatB.whichC.whatD.it

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A解析当定语从句的先行词被形容词的最高级或者序数词修饰时,引导词要用that,所以选A.
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