3 .
1. ________ adv.忧虑地，担心地→ anxious adj. ________ → ________ n. 忧虑，焦虑
2. ambition n.抱负，雄心；追求，夙愿→________ adj.有志向的，有抱负的
3. explorer n.探险者(家)→________ n.探险；探索 → explore v. ________
4. cheerful adj. ________ → ________ adv. 高高兴兴地→ cheer v.欢呼；(使)高兴起来
5. ________ adj. 久远的，遥远的→ distance n.距离
6. ________ n. 坦诚；诚实，正直→ honest adj诚实的 → ________ adv.真诚地；公正地
7. sincerity n.真挚，诚实，真诚→ sincere adj. ________ → ________ adv.真诚地；由衷地，诚恳地
8. ________ n. 勇气；勇敢的行为→ brave adj. 勇敢的
9. varied adj. 各种各样的，形形色色的→vary v.相异，不同→ ________ n.多样化，多样性→ various adj.→ ________ variously adv.不同地；多方面地
10. ________ adj. 可怕的，恐怖的→ scaring → scared adj. ________ → scare vt. 使恐惧
11. harmless adj. ________→ harm vt.&n.伤害，损害→________ adj有伤害的
12. ________ n.消亡；消失→ ________ vi. 消失
13. ________ n.丧失；死亡→ lose v.丧失

5 . People who think positively demonstrate increased life spans(寿命), lower rates of depression and ______(anxious), better physical and psychological health, reduced risks of death from heart problems. (所给词的适当形式填空)

9 . "Thunderstorm ________（焦虑）" is common among dogs, and some dogs tremble with fear under the owner's beds during thunderstorms. （根据汉语提示单词拼写）