从A、B、C、D四个选项中选出能填入空白处的最佳答案。

    Mr. White lost his job last week. It was difficult for him to find another 1. Somebody told Mr. White that he 2 get a job in a town two hundred kilometers 3, so he decided to get there 4. He went to the railway station and got 5 a train. He was the only one in the train. The train started. Suddenly, a man came in 6 a gun (枪) and said to him. “Your money 7 your life?” Mr. White was afraid and sat there without 8 up.

    “I 9 any money,” Mr. White answered.

    “Then why are you so afraid of me?” The man asked angrily.

    “Because I  10 you were the conductor (售票员). I didn't buy a ticket,” answered Mr. White.