1 . It is ____________(估计) that the stupid boy can’t find an appropriate way to get out of the trap. (根据汉语提示写单词)

2 . Investigations have indicated that the virus was most likely to o________ (起源)from the seeds. （根据中英文提示填空）

3 . 词性转换
1. ________n. 压力；要求→________ v．压，按
2. ________adj. 已灭绝的→________ n. 灭绝
3. ________adj. 知道；发觉；有……意识的→________ n. 意识
4. ________n. 危险→________ vt. 使遭受危险；危害→________ adj. 濒危的→________ adj.危险的
5. ________adv.立刻→________ adj. 立刻的
6. ________vt. 涉及；让……担忧→________ adj. 担心的→________ prep. 关于
7. ________vt.& vi. 打猎；搜寻；追捕→________ n. 打猎→________ n. 猎人
8. ________vt. 划分等级→________ n. 等级
9. ________vt. 使惊恐；使害怕；使担心 n. 恐慌；警报；警报器→________ adj. 使人恐慌的
10. ________adj. 大量的；广泛的 n. 大量；堆；群→________ adj. 大规模的
11. ________vt. 使……感动 →________ adj. 感动的→________ adj. 令人感动的
12. ________adj. 合法的→________ adj. 非法的；不合法的→________ adv.合法地
13. ________vi. 死→________ n. 死→________ adj.死的
14. ________vt. 减少→________ n. 减少
15. ________vt. 影响→________ n. 影响→________ adj. 有效的，生效的

4 . From the neat designs of the paper-cuttings on the windows, to the Spring Festival couplets on the door, and to the New Year paintings on the wall, everything r___________ joy, luck and happiness. (根据首字母单词拼写)

5 . In life, parents sometimes c________ us for our faults, but this is due to love, which can make us better.(v. to express your disapproval of someone or something or to talk about fault) （根据首字母单词拼写）