The boss _____ the workers how to do it, or the accident couldn’t have happened. A. can’t have told ...
2022-11-08 04:27:11 106次 2014-2015学年广东汕头金山中学高二上第二次月考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The boss _____ the workers how to do it, or the accident couldn’t have happened.
A. can’t have told B. ought to tell
C. could have told D. mustn’t have told
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