单项选择题
A.watched B.passed C.followed D.caught
A.Food scraps and metals B.Paper and glass C.Metals and glass D.Food scraps and paper
A.Women’s umbrellas are made in various kinds of colors. B.The inventor of the umbrella is unknown. C.Once ordinary people had no right to use umbrellas. D.Umbrellas were popular and cheap in ancient times.