Across
- 3. Need no driver
- 6. Old, from a very long time ago
- 8. Not harmful to the environment, or trying to help the environment
- 10. Extreme surprise
- 11. High-speed transportation system
- 12. The appearance of the sky in the evening before the sun goes down
- 14. Hanoi is the ... city of Viet Nam
- 15. Where the royalty lives or to protect someone important
Down
- 1. A black and white bird that cannot fly but uses its small wings to help it swim
- 2. A large area of land, especially in relation to its appearance
- 4. Another word for "sun"
- 5. Can be used and easily replaced
- 7. The shape of the land next to the sea
- 9. The place something comes from or starts at
- 13. Having or producing a comfortably high temperature, although not hot