They set up a plant _ produced things _ had never been seen

They _ _ _ (在一起)since they set up their own music band 英语问题they had been set up beautifully They had a great time there.=They _ _ there.=They _ _ there a prosperity that had never been seen before appea A prosperity which /that had never been seen before appears A prosperity which / that had never been seen before appears (1) A prosperity which / that had never been seen before app A prosperity which had never been seen before appears in the They want to _(climb)up a ladder. I have never seen such a man running so fast like Tom—just _ I have never seen such a film _ was shown yesterday.that?as? He has never been toany city in China.=He's been to _ _ _ _