It's full mark! But it can't be any one of those top students' because all their papers she has found. The whole paper is clean and tidy. So, the student tried to write carefully though he is not good at writing English at all. Then it might belong to one of her hardworking average students. He doesn't give up learning this subject and keeps working hard. He must be a little bit nervous in the exam and forgot to sign his name. It may be Tom's! He usually asks questions in class no matter how others laugh at him. What a good student! He really did well in this exam. It's full mark! But it can't be any one of those top students' because all their papers she has found. The whole paper is clean and tidy. So, the student tried to write carefully though he is not good at writing English at all. Then it might belong to one of her hardworking average students. He doesn't give up learning this subject and keeps working hard. He must be a little bit nervous in the exam and forgot to sign his name. It may be Tom's! He usually asks questions in class no matter how others laugh at him. What a good student! He really did well in this exam.