问题补充:
单选题He___atthemeetingthismorning.Hewasinhospitalatthetime.A.couldn’t have spokenB.mustn’t have spokenC.shouldn have spokenD.needn’t have spoken
答案:
A解析作“不可能”一类的否定推测,不要用mustn’t,而要用couldn’t.
如果觉得《单选题He ___ at the meetin》对你有帮助,请点赞、收藏,并留下你的观点哦!