Theboss____________theworkerhowtod

发布时间：2020-07-25 07:39:39

The boss____________ the worker how to do it, or the accident couldn't have happenedA.can't have toldB.ought to tellC.could have toldD.mustn't have told

网友回答

A解析抓住关键“or”，意为“否则”，所以前后意思相反。
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