题目

Few of us haven’t read Cinderella, the story of a young woman living in poverty who meets the prince of her dreams. Some might not want to admit it, but there is a hidden Cinderella in everyone’s heart — we all wish we could achieve recognition or success after a period of obscurity (默默无闻) or neglect. Mary Santiago has that secret dream, too. Her story is featured in Another Cinderella Story, a film set in a US high school. Mary is shy but loves to dance. Compared with other girls, she is invisible. However, her world changes completely when a famous teenage pop singer, JoI want to use the same tools _______used in your factory a few days ago. A．as was B．which was C．as were D．which