Mike is 13 years old, and he is interested in collecting stamps. He began to collect stamps when he was 8 years old. He spends all his pocket money on stamps. Sometimes his parents send him stamps when he does well in his study. Therefore, Mike collects a lot of stamps. He often shows his stamps to his friends and his neighbours (邻居). He usually goes to his mail box (信箱) to get letters after school. He wants the stamps from them. One day, Mike went to the mail box to get letters. But there were no letters in his box. He found a letter in the box next to his. The letter is to Mrs Green. There was a beautiful stamp on the letter. So he got off the stamp carefully and hurried home. After he went home, he was afraid that Mrs Green would know he got her stamp. On the morning of the next day, Mike put the stamp back to Mrs Green's box and then went to school. When he came back from school, he met Mrs Green. She smiled to Mike. Mike smiled, too.
