A.I've gone to a paper factory. B.That would be fine. C.That...
8.A.I've gone to a paper factory. B.That would be fine. C.That's terrible! D.Yes.of course. E.Good idea! F.The river has become very dirty. G.I've been to a paper factory.A:Where have you been.Fang Li?I called you.but you weren't in your off