题目内容：

Once upon a time, a powerful king commanded his men 1. (build) a public arena where crime was punished or innocence(无罪) was decided. When a person 2.(accuse) of a crime, his future would be judged in the public arena.

Usually the king sat high up on his chair. He gave 3. sign and a door under him opened. The accused person stepped out into the arena. Opposite the king 4. (be) two doors. The person on trial(审判) had to walk 5. (direct) to these doors and open one of them. He could open whichever door he pleased. If the accused man opened one door, out came a hungry tiger, the 6. (fierce)(凶猛的) in the land. The tiger immediately jumped on him and tore him into pieces as _ 7. (punish) for his guilt. The case of the suspect was thus decided. 8. , if the accused opened the other door, there came a woman. To this lady he was immediately married, in honor of his innocence.

This was the king’s method of 9. (carry) out justice. Its fairness appeared perfect. The accused person could not know which door was hiding the lady. He opened either as he pleased, without knowing 10. he was to be killed or married