Across
- 4. having a lot of people
- 7. 无家可归的
- 8. luckily
- 9. you can find on a bird
- 11. 之前的
- 14. 经历
- 15. 相似性
Down
- 1. the state of being poor
- 2. 污染的
- 3. an act of giving sth to sb and recieve sth
- 5. 可能性
- 6. 旅游业
- 9. object,such as tables,chairs
- 10. 交通工具
- 12. the way where cars travel at a high speed
- 13. 位置