33.Working in the factory for years,you must have been ( ) t

33.Working in the factory for years,you must have been ( ) t I have been working in this factory for about 20 years and s Have been working for several years He is said to have been working in that factory for twelve y By next month he have been working in our factory for 30 yea Jim has been in the factory for two years _______ he left sc They have been working ____ a teacher for 10 years. The factory has been -----for two years.-----怎么填? they have worked in the factory for three years,（对划线部分提问) I've been working at the same job for years.. the factory has been open for twenty years 还是the factory has doyou remember howlong( )in the factory?4years.a have you be