—IknewshewasinbecauseIheardherradiobutshedidn’topenthedoor.—She_____

发布时间：2020-08-04 19:31:59

—I knewshe was in because I heard her radio but she didn’t open the door.— She________ the bell.A.may not hearB.may not have heardC.mustn’t have heardD.mustn’t hear

网友回答

B解析由第一句知道时态为过去时，may not可能没有，mustn’t禁止。
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