Before liberation the workers in this factory were often mad

the workers in this factory were made--- 12 hours a day in t About__of the workers in the factory were born in the___. About___________of the workers in the factory were born in t About< >of the workers in the factory were born About ___________of the workers in the factory were born in_ The workers are in work in this factory The workers make bikes in this factory.改为被动语态 The number of workers in this factory _____ 1,500. About ____of the workers in the factory were born in the __ About _______ of the workers in the factory were born in the About___of the workers in the factory were born in the___. A 4. About _____ of the workers in the factory were born in th