My mother has been working in that clothing factory for___.

My mother has been working in that clothing factory for___. my mother has been woking in that clothing factory for- My sister has been working in that factory ever ______ it wa my father has been working in the factory （since 1990） （对括起来 My mother has worked in this factory 2 years. Connie has been working in the factory __ she was twenty yea He is said to have been working in that factory for twelve y The Smiths has been in China for___.He has been to Shanghai_ my mother works in a factory,______ my mother ( )in that factory at the age of 18. A.had worked 1、our teacher has been teaching in this school for___.A.two My mother works in a factory.中的“ a factory”是作in in a factory