Dear Mr. Wang,
       Someone comes to the office to see you in the morning, but you and your wife are out. He comes here at 10 a.m. Because he is very busy, he goes away half an hour later. He tells me that he is your classmate at college(大学). Now he teaches Chinese in a high school(高中) in this city and he lives near the No. 6 Middle School. He is a very tall man with short hair. He wears a pair of glasses. He tells me his telephone number is  33426685. He is often at home at 7:00 p.m. So you can call him in the evening.

    I'm Katy. I have many good friends, and Jema is one of them. I'm in Class Six, and Jema is in Class Eight. We first met in our school tennis club. Both (两个) of us like playing tennis, and we often practice together.

    I often visit Jema on the weekend: Sometimes we swim in the pool or go shopping with our friend Sarah. She is in our school dance club and dances beautifully. I went to Jema's house today. It was raining, so we couldn't go out.

    "Let's watch a movie," Jema said. "You're my guest (客人), Katy, so you can pick it."

    I picked a movie called Dance of Joy. It's about a girl called Susan who likes to dance. Susan has a cat named Albert. Albert chews (咬) her dancing shoes, so she can' t dance anymore. Luckily, she gets a new pair of dancing shoes. Albert surprises Susan by bringing her the new shoes in his mouth. It is a wonderful happy ending.

    I told Jema I loved the movie. She laughed and said she found it quite boring. She only kept watching it because I was enjoying it so much. I felt a little bad about it, but it's nice to have a good friend like Jema.

    David was a fifteen-year-old boy. He thought he was a young man, but his parents didn't think so. They told him, When you begin to think about helping others, you'll be a young man.”

    One afternoon, his parents gave David some money to buy some bread in a super- market. He saw an old woman there. The old woman looked very tired. David went up to her and found that the old woman lost her money and didn't have anything for her lunch. David took the old woman to go to the restaurant. But the old woman only ordered a glass of water for herself. David felt sorry for her, so he asked the waiter to bring the woman some bread and a cup of coffee. The old woman was so hungry(饿的） that she ate up all the food very soon. After that, she told David that she would never forget his kindness(慈善).

    David felt very happy. He thought he became(变成）a real young man.

根据短文内容，回答问题

    When our son Bradley was ten, the new bicycle he had received earlier that year was stolen. Owning a bicycle was a big deal to our children when they were little. They spent hours and hours, day after day, on their bicycles, riding up and down the footpath, and at the front of the house. We also rode together as a family a lot. Bicycling was a great way to get the kids out of the house and into the fresh air without spending any money.

    Bradley had discovered that his bicycle had been stolen from our backyard in Campbelltown, South Australia, when he and his sister went outside for a morning ride. He couldn't believe that someone would do this.

    He got a large piece of cardboard, painted a sign begging for the bicycle to be returned, and tied the sign to the letterbox. The following morning, when I went out to collect the mail, I found a white envelope with the magical words, "Buy yourself a new bicycle". There was a $100 banknote inside.

    We were very touched that someone had the heart to do this, We've never been able to thank the person but we suspect(猜想) that it may have been one of our wonderful neighbors. Bradley painted a big"______!"on the sign and we left it outside for a couple of weeks afterwards, hoping the kind stranger would drive down our street.

    A delighted Bradley was able to buy a new bicycle. As the years went on, the bicycles became bigger and more expensive but remained just as important for those family bicycle rides. Now Bradley is 25. Sometimes I miss the days when receiving a bicycle was the best thing in the world to them.

    All these years later we are still thankful for the stranger's kindness. We were a young family with three little children and it meant a lot to us. We still talk about it and, even now, wonder who the kind stranger was.