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.
时间:2020-02-07 04:46:44
单选题He___atthemeetingthismorning.Hewasinhospitalatthetime.A.couldn’t have spokenB.mustn’t have spokenC.shouldn have spokenD.needn’t have spoken
A解析作“不可能”一类的否定推测,不要用mustn’t,而要用couldn’t.