31. The room is in a terrible mess; it cleaned.A. can’t have beenB. shouldn’t have been C

发布时间：2020-08-15 02:15:45


31. The room is in a terrible mess; it      cleaned.
A. can’t have been
B. shouldn’t have been
C. mustn’t have been
D. wouldn’t have been

网友回答

(答案→)A. can’t have been
B. shouldn’t have been
C. mustn’t have been
D. wouldn’t have been
解析：可联系客服索取此答案。
以上问题属网友观点，不代表本站立场，仅供参考！