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.
Answer:
Good for you. Is that your hobby?
Explanation:
The correct answer is B. Father
Before he left the house modifies father because it further explains the father's qualities, that is he is a person that's left the house.