My father worked in the factory for forty years,(where;that;

My father worked in the factory for forty years,(where;that; My father worked in the factory for three years.(对for three His father has worked in the factory for many years and coug It was in the factory----his father worked for 10 years ---- ( ) last week ,my father had worked in the factory for ten y My father worked in factory ( ) 1998. Is this the factory（ ）he worked ten years ago?A.that B.where they have worked in the factory for three years,（对划线部分提问) Mr.Brown has worked in the factory __________15 years.A.for _____have you worked in the factory?- For ten years.A.How lo This is the factory my father worked in这个句子对吗? Is that factory which your father once worked in?