One day Reuben saw something in a shop window that set his heart racing. But he couldn’t 9 it at that moment. However , he opened the shop’s door and went inside. Standing 10 and straight , he told the shopkeeper what he wanted and asked him to 11 it for some time. The shopkeeper 12 . Reuben walked out into the sunlight and thought he would 13 the five dollars and not tell anybody. Hearing the sound of hammering( 敲打 ) , he had a (n) 14 .People built their own homes using nails( 钉子 ) and 15 nail bags outside. He could sell them back to the nail factory for five cents a piece. That day he sold two bags and hid the 16 . It was evening when Reuben got home. Dora was at the kitchen , ready to serve 17 as Reuben sat at the table. He looked at his 18 and smiled. Every day after school. Reuben 19 the town , collecting nail bags. On the day the school closed for the summer holiday , Reuben was happier than anyone 20 he would have more time for his 21 .Finally , the time had come ! He 22 the coins. It was five dollars in all. Then he headed for the shop.“I have the money , ”he 23 told the owner. And he got his 24 . Racing home , Reuben 25 as he ran to his mother , “Here , Mum ! Here ! ”He 26 a small box in her big hand. She 27 it carefully and saw the golden word “Mother” inside the box. It was Mother’s Day. Dora had never received such a 28 .She smiled happily and held her son in her arms.