To change the future

PS-7

　　The door swung open at once. A tall, black-haired witch in emerald-green robes stood there. She had a very stern face and Harry's first thought was that this was not someone to cross.
　　"The firs' years, Professor McGonagall," said Hagrid.

"And yet you still do that." McGonagall says looking at Harry and his friends. She does the same to Jason and his friends.

"Thank you, Hagrid. I will take them from here."
　　She pulled the door wide. The entrance hall was so big you could have fit the whole of the Dursleys' house in it. The stone walls were lit with flaming torches like the ones at Gringotts, the ceiling was too high to make out, and a magnificent marble staircase facing them led to the upper floors.
　　They followed Professor McGonagall across the flagged stone floor. Harry could hear the drone of hundreds of voices from a doorway to the right -the rest of the school must already be here -- but Professor McGonagall showed the first years into a small, empty chamber off the hall. They crowded in, standing rather closer together than they would usually have done, peering about nervously.
　　"Welcome to Hogwarts," said Professor McGonagall. "The start-of-term banquet will begin shortly, but before you take your seats in the Great Hall, you will be sorted into your houses. The Sorting is a very important ceremony because, while you are here, your house will be something like your family within Hogwarts. You will have classes with the rest of your house, sleep in your house dormitory, and spend free time in your house common room.
　　"The four houses are called Gryffindor, Hufflepuff, Ravenclaw, and Slytherin. Each house has its own noble history and each has produced outstanding witches and wizards. While you are at Hogwarts, your triumphs will earn your house points, while any rule breaking will lose house points. At the end of the year, the house with the most points are awarded the house cup, a great honor. I hope each of you will be a credit to whichever house becomes yours.

　　"The Sorting Ceremony will take place in a few minutes in front of the rest of the school. I suggest you all smarten yourselves up as much as you can while you are waiting."
　　Her eyes lingered for a moment on Neville's cloak, which was fastened under his left ear, and on Ron's smudged nose. Harry nervously tried to flatten his hair. Jason didn't bother trying to tidy his knowing it was a lost cause
　　"I shall return when we are ready for you," said Professor McGonagall. "Please wait quietly."
　　She left the chamber. Harry swallowed.
　　"How exactly do they sort us into houses?" he asked Ron.
　　"Some sort of test, I think. Fred said it hurts a lot, but I think he was joking."

Fred snickers as Ron shoots him a dirty look and Fred winks at him.

Harry's heart gave a horrible jolt. A test? In front of the whole school? But he didn't know any magic yet -- he and Jason only practiced theory they never did the actual spells in the book. What on earth would he have to do? He hadn't expected something like this the moment they arrived. He looked around anxiously and saw that everyone else looked terrified, too. No one was talking much except Hermione Granger, who was whispering very fast about all the spells she'd learned and wondering which one she'd need. Harry tried hard not to listen to her. He'd never been more nervous, never, not even when he'd had to take a school report home to the Dursleys saying that he'd somehow turned his teacher's wig blue. He kept his eyes fixed on the door. Any second now, Professor McGonagall would come back and lead him to his doom.
　　Then something happened that made him jump about a foot in the air -- several people behind him screamed.
　　"What the --?"
　　He gasped. So did the people around him. About twenty ghosts had just streamed through the back wall. Pearly-white and slightly transparent, they glided across the room talking to one another and hardly glancing at the first years. They seemed to be arguing. What looked like a fat little monk was saying: "Forgive and forget, I say, we ought to give him a second chance --"
　　"My dear Friar, haven't we given Peeves all the chances he deserves? He gives us all a bad name and you know, he's not really even a ghost -- I say, what are you all doing here?"
　　A ghost wearing a ruff and tights had suddenly noticed the first years.
　　Nobody answered.
　　"New students!" said the Fat Friar, smiling around at them. "About to be Sorted, I suppose?" "Where's the ghost busters when you need them?" Jason muttered in Harry's ear.