【单选题】

It was a bright spring afternoon when Freda told me she wouldn’t need me any more. I had just finished my four-hour work (76) up and down the stairs of her three-storey home, cleaning the floor and washing the dishes. She was (77) jeans and a sweater, sitting at the table I had just (78) a pile of papers spread around her. Her husband’s (79) was going to be reduced by thirty percent.And they were trying to live as if it had (80) happeneD、I felt sorry for her, but I also felt a sense of (81)

I had been cleaning Freda’s house for five years and bad (82) an unexpected relationship with the family. It was not just (83) I had become an expert at scraping dirt stuck to their wooden floor, (84) that I had learned exactly how to place toys on the girls’ beds. It was (85) than that, for I felt I bad become a part of their life.
A．why
B．what
C．that
D．which