I feel vexed....

Today, in fact, yesterday, the class Chinese rep was supposed to collect Chinese ace plans with files.however, he had told us to hand in the plan, without the file , the day before the supposed collection.Therefore, the Chinese teacher returned the plans to him because she wanted it with the files. The next day when he distributed the plans back to us, i was totally shocked. A nice clean sheet of paper which i had handed in was totally crumpled, torn and had foot prints on it. and to make matters worse, we had to hand it in immediately after buying our files on that day itself. How was i supposed to do so? I had better explain myself before i get into deep waters