Yesterday Tom had picked up a handful of key in the corridor. There were many discussions.Lily said that may be Lucy lost, because they looked like hers,John said is can be Kate's, because there was a red line in it,but Jim said it can't be Kate's, because he just saw him using, whose was this? Finally, they decided to give to the teacher.Under the teacher's help, they found the owner soon and return it to him.