文章大意:本文介绍了世界上最有名的一个恶作剧。
根据第四段的内容将句子重新排序。
21. Hundreds of people believed the story and fear spread.
22. Thousands of people left their homes.
23. Orson Welles announced the news on his radio program.
24. Police officers announced the story was a hoax.
25. The radio program described the event in detail.