畅游学海敢搏风浪誓教金榜题名。决战高考，改变命运。凌风破浪击长空，擎天揽日跃龙门Unit 3姓名_一、 单项选择（每题1分，共16分） ( )1. I think its really_ hard work for me to finish the job in twenty minutes Aa Ban Cthe D( ) 2. He _a worker in a factory, but he _ a pop star two years ago. A. used to be; has become B. used to be; became C. was used to be; becomes D. was used to being; has become ( ) 3. When will the American exchan
