单选题
Mr. Green was driving with boxes of ice cream back to the storehouse when he (41) himself in a traffic jam(交能堵塞). Feeling hot (42) the sun, he took an ice-cream and ate it. Four (43) children in the car behind watched him eat it. He was (44) for them and gave them some ice cream, too. In minutes, he was surrounded by children. By the time traffic began to move ,he had gone through four cardboard boxes. (45) of explaining the situation to his boss,he decided to buy the ice-cream himself. When he (46) to the storehouse,however,he was (47) to the manager's office and asked (48) he had given away the company stock. He thought that he would be punished. Instead,his boss smiled in a (49) way and said that it was the best public (50) the company had had in years,people had been phoning in to thank the company.