Ididn’tseeherinthemeetingroomthismorning.She_____atthemeeting.
A.mustn’t have spokenB.shouldn’t have spokenC.needn’t have spokenD.couldn’t have spoken在线课程D
不用于否定句；shouldn’t have done sth. 表示“本不应该做某事而实际上做了”；needn’t have done sth. 表示“本来不必做某事而实际上做了”；couldn’t have done sth. 表示“不可能做过某事”。根据题意，选D。
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