Student: We all went to see that movie.
Teacher: But the sign says that the movie is for adults only. You _____ admitted.
(A) aren't to be
(B) hadn't have been
(C) mustn't have been
(D) shouldn't have been
【用戶】Hsu Baleng
【年級】高一下
【評論內容】must + have + p.p. + 過去時間副詞，表對過去的推測，意為「過去一定」shouldn't have p.p.則表示"你不應該這樣做 你卻這樣做了"