They must have finished the work,---?A,mustn't they B,haven'

They must have finished the work,---?A,mustn't they B,haven' They haven't finished their work.Maybe they have some troubl they have never seen the film___?A.haven't they B.did they c 2)They must have arrived by now,haven't they?为什么是haven't the #[1] -They haven't finished all the work up to now.-They ___ [-C28] -They haven't finished all the work up to now.-They _ They must be waiting for us,()?a.aren't they b.mustn't they That must have cost you much money,___it?A.mustn't B.haven't He must have finished his homework,he A,mustn't B didn't Cha they have finished a large part of the work and they must have finished the work by the end of last month,__ 初中反义疑问句You must have made a mistake,haven’t you?　　They must