—Is this factory_____ your father once worked?

—Is this factory_____ your father once worked? Is this factory__ your father once worked in before he retir Is that factory which your father once worked in? Was it in this school __ your father once worked __ you are This is the farm ____Tom's father once worked when he was yo Is this factory____your mother once worked. is this farm where your parents once worked?是什么定语从句还是表语从句 Is this the factory ___your father worked? Is this school _____ your father worked in ten years ago?（选择 请问Is this school ______ your father worked in ten years ago? is this your father的否定回答 Is this your father?肯定回答是什么