Mr. Moony presents his compliments to Professor Snape, and begs him to keep his abnormally large nose out of other people's business. Mr. Prongs agrees with Mr. Moony, and would like to add that Professor Snape is an ugly git. Mr. Padfoot would like to register his astonishment that an idiot like that ever became a professor. Mr. Wormtail bids Professor Snape good day, and advises him to wash his hair, the slimeball.

This was their first encounter with the fact that a full stomach meant good spirits; an empty one, bickering and gloom.

But this is touching, Severus,” said Dumbledore seriously. “Have you grown to care for the boy, after all?” “For him?” shouted Snape. “Expecto Patronum!” From the tip of his wand burst the silver doe. She landed on the office floor, bounded once across the office, and soared out of the window. Dumbledore watched her fly away, and as her silvery glow faded he turned back to Snape, and his eyes were full of tears. “After all this time?” “Always,” said Snape.

Decent people are so easy to manipulate, Potter.

Every hour that passed added to her grief, because it bore her further away from the living man, and because it was a tiny foretaste of the eternity she would have to spend without him.

Professor Flitwick had dried himself off and set Seamus lines ("I am a wizard not a baboon brandishing a stick")

Read as much as you possibly can. Nothing will help you as much as reading.