13. wolf ----seven wolves

12. die (v.)----dead /dying (adj.)----death (n.)

11. live (vi.) 生活，居住 / (adj./ adv.)現(xiàn)場直播的---- alive (adj.表語 /dead)---- living (adj.定語)----lively (adj.活潑的)

10. thick ---- thicker / thin --- thinner

9. encourage sb. to do sth.

8. take actions to do sth.

7. follow (v.) follow sb./ sth. ---following (adj.)

6. danger (n.)----dangerous (adj.)----dangerously (adv.)----endangered (adj.) 瀕臨滅絕的　 safety (n.)----safe (adj.)----safely (adv.)

5. have nowhere to live　 / have no pen to write with / have no paper to write on / The river is too deep to swim in.

4. walk through the forest