Answer:
I would assume this is from book 3, I recognize this.
Let's take it step by step and work backwards.
Why was Professor Lupin resigning?
Answer: He was resigning because Professor Snape told everyone he was a werewolf. Lupin knew that the angry letters would be coming soon and decided to leave as soon as possible.
How did Black escape?
Answer: Black escaped because Harry and Hermione went back in time to stop the hippogriph, Beaky, from being killed. They went through a lot of suspensful events before arriving outside the window where Sirius Black was being contained.
Why did Harry think his father conjured a patronus to save him, Hermione, and Black?
Answer:
It was really Harry Potter that conjured the patronus, but he looked very similair to his father and tricked himself.
How were Hermione and Harry able to travel back in time?
Answer: Hermione had a timeturner--an object that you turn a certain amount of times and that certain number will take you that many hours back in time.
Had Hermione used this before?
Answer: Hermione was using this to get to all of her classes because her schedule was so compact.
Why did Snape leak out the information that Lupin is a werewolf?
Answer: He was so mad that Black had escaped and he was already furious at Lupin.
How did Pettigrew escape?
Answer: Pettigrew was an unregisterd animajus, and he was able to transform into a rat. When Lupin became a werewolf, Black went after to pursue Lupin and Peter Pettigrew escaped into the forest.
How could Pettigrew have given Voldemort the secret hiding place of the Potters?
Answer: Pettigrew was the Potter's secret keeper. At the last moment, Black was trusting Pettigrew and told him to be their secret keeper. He thought they were safer with Peter.
Why did he do it?
Peter leaked information because he was so scared of Voldemort, and felt he had no choice.
How did Snape know Lupin and Black were in the Shrieking Shack?
Answer: Lupin and Black went to school when Snape did and Snape always wondered where they went every full moon. He eventually figured it out and followed them. He was stopped by the Whomping Willow and almost got killed.
What was he going to do to them?
Answer: He was going to hand them into the Dementor's to have the dreaded Dementor's kiss.
What had really haunted the Shrieking Shack all these years?
Answer: It was Lupin, when he transformed into a werewolf. The howling was the pain he felt when he bit himself over and over again.
Why did Hermione feel Lupin betrayed everyone?
Answer: He felt like he should have told people instead of keeping secrets like he did.
What did Harry and Hermione find in the room with Ron?
Answer: I'm not sure when this was. It might have been scabbers escaping, though.
What attacked Ron and dragged him in a tunnel under the Whomping Willow?
Answer: It was Sirius Black because he could tell that Peter Pettigrew was with him.
What did Hagrid want to keep Harry, Ron, and Hermione from seeing?
Answer: They didn’t want them to see Beaky’s beheading.
Do you think Professor Trelawney made a real prediction with Harry in her classroom?
Answer: Yes. I think she did because she normally talks in a misty tone while during that incident she went rigid and spasmatic.
How could you tell?
Answer: She went rigid and spasmatic.
Why did Hermione hit Malfoy?
Answer: She got so mad at him for insulting her teacher, Hagrid, that all the anger built up in her just exploded.
What would you have done?
Answer: I would have punched him too. Why?
Answer: It isn’t fair to treat a higher person like that.
Why was the Quidditch match between Slytherin and Gryffindor so rough?
Answer: The stakes were high, but the biggest stakes was their pride.
How did Professor Lupin cover up for Harry with
Professor Snape?
Answer: He didn’t want Snape to find out what the Marauder’s map really was.
What took Harry so long to meet up with Ron in Hogsmead?
Answer: He had to avoid anyone else’s gaze as he went through the secret passageway into Hogsmeade. Also, he had to not hit anyone else while he was covered up by the Invisibility Cloak.