阅读下面短文，掌握大意，然后从A、B、C、D四个选项中选出最佳选项。
Mr. Smith had a small supermarket in a small town. All the people who lived nearby 1to go to his supermarket and buy things there. But several years ago, a big chained store 2 in that area and it sold all kinds of things from the toothbrush to TV and, above all, the price was pretty 3. So a lot of small shops 4 except Mr. Smith's. The manager of the chained store wanted to explore 5 was hidden behind Mr. Smith's success, so he decided to drop into Mr. Smith's supermarket and he saw a lady buying things there. He stopped her 6 and asked “Madam, why don't you go to the big chained store?”
With a smile, the lady told him it was because of a pair of shoes. She told him a story. Three years ago, 7 her divorce (离婚), she worked hard to raise her family and one day when she bought things in a supermarket, Tom, one of her little children, 8 the supermarket and asked her to buy him a new pair of shoes. He cried, “Today I had a basketball match, but all the people 9 me because of the shoes.” She wanted to buy him a pair of shoes but the money in her pocket was 10 enough for a milk. “I am sorry but I 11 when we have money,” the mother said. Seeing that there was no hope, Tom ran away. The woman stood there weeping (哭泣). Later she realized that 12 was patting on her back. 13, she found it was Mr. Smith. He took a pair of shoes that the son wanted to buy.
“Take them,” he said.
“But I don't have enough money,” the woman shook her head.
“Take them, your son can't wait. You can pay me later,” Mr. Smith told her.
Now the manager of the chained store knew the14 for Mr. Smith's success. He decided that he would follow in Mr. Smith's footsteps, putting his heart into whatever he did with the hope of attracting more customers. And he did so after the years that followed, which also 15.
