Today I got up very early in the morning. After I finished breakfast, I went to school. On my way to school I saw something lying on the ground. I picked it up and found it was a mobile phone. I was afraid I would be late for school. I had no time to wait for the owner. So I gave it to the policeman.
  Shortly after I reached my school, the headmaster came to my class and praised me in front of the class. How could he knew all about it? I guess it must be the policeman who told him what I did.