Across
- 1. Causing embarrassment; lacking grace
- 3. Give and receive something in return for each other
- 6. Skill or certificate required for a job or activity
- 7. Boundary line where one thing meets another
- 9. 42.195 km long-distance running race
- 12. Not following the normal or regular pattern
- 13. Tiny living things, some causing illness（pl.）
- 15. Take part in a contest to win against others
- 16. A nice feeling of happiness or satisfaction
Down
- 2. Vertical distance from top to bottom of an object
- 4. Group of singers; repeated part of a song
- 5. Plan for controlling income and expenses
- 8. One of the five faculties (e.g. sight, hearing)
- 10. Ending of a pregnancy before the fetus can live
- 11. Natural surroundings where plants and animals live
- 14. Untidy, disorganized and hard to tidy up