Unfortunate day ...

The accounting lecturer give us a assignment last Thursday and we have to pass up it on 30-07-2009. Today is my turn to finish my part of the assignment. All of my group members had done their parts and they saved their works into a pen drive and gave it to me. I decided to complete my assignment after all my class today. When i reached the library , i only realise that the pen drive that they gave me before is lost. I try to find it at the places i went previously. Unfortunately, i fail to find the pen drive . The only copy of the assignment in the assignment was lost. So, my group members have to redo the assignment.This is my first unfortunate day in Inti. I hope it will not happen again. Very sorry to my group members, Eng Keong, Chai Boon and Afif. Thanks for your forgive.