Thank you sir.
Explanation:
you might be sick or even had worked late and the boss decides to give you a day off. Therefore It is nice to thank him
By Giving Her Seat To the fellow passenger
The thing that happen between chapter 21 and chapter 22 is the tone permanently changes to a more cynical attitude and this is the significant structural shift. The answer to this question is which asking about what happen between chapters 21 and 22 is that the tone permanently changes to a more cynical attitude.
