如何使用 "Begun" 造句

1. Beckham has begun setting up football schools .
贝克汉姆已开始建立一些足球学校。
2. Old-media firms have barely begun to address such problems .
旧媒体公司几乎没有着手处理此类问题。
3. That race has barely begun .
这场测试才刚刚开始。
4. Has this line begun boarding ?
这班机开始登机了吗?
5. A death spiral had begun .
于是破产的过程开始了。