问题 更新时间2023/4/3 12:59:00 The room is in a terrible mess; it _________ cleaned.A.can’t have beenB.mustn’t have beenC.shouldn’t have beenD.wouldn’t have been 答案 登录 注册 参考答案:BCD 出自:联大 >> 三门峡职业技术学院英语读写