Unit 9 How birds fly in the sky
Across
- 3. the part of a bird's body that it uses to fly
- 4. 얇은, 가는
- 6. 부리
- 8. the hard part of the body under the skin
- 9. to leave the ground and go up into the air
- 11. having nothing inside
- 12. not heavy, easy to pick up and carry
Down
- 1. 비행기
- 2. 안에, 안으로
- 4. 이, 이빨
- 5. 땅, 지면
- 7. 날다
- 10. to move arms or wings up and down