3 . 词性转换
1. please vt. & vi. （使）高兴；（使）满意→________________adj. 令人愉快的；友好的→________________adj. 高兴的；满意的→________________adj. 令人愉快的→________________n. 快乐；乐趣
2. mass n. 团；堆；许多；大量→________________adj. 巨大的；非常严重的
3. breath n. 呼吸的空气→________________adj. 气喘吁吁的→________________vt. & vi. 呼吸
4. freeze vi. & vt. (froze，frozen) 结冰；（使）冻住→________________adj. 极冷的；冰冻的→________________adj. 结冰的；冻僵的；冷冻的
5. frost n. 霜；严寒天气；霜冻vt. 使蒙上霜 vi. 结霜→________________adj. 结霜的；霜冻的
6. astonish vt. 使十分惊讶；使吃惊→________________adj. 惊人的；令人惊讶的→________________adj. 感到惊讶的→________________n. 惊讶
7. mist n. 薄雾；水汽→________________adj. 多雾的；模糊的
8. advertise vi. & vt. （为……）做广告/宣传；征聘→________________n. (informal ad) 广告；启事→________________n. 广告商
9. photograph n. 照片 vt.（为……）拍照 vi. 上相，上镜→________________n. 摄影师；拍照者→________________n. 摄影；摄影术

4 . 词性转换
1. minor adj. 较小的；次要的；轻微的→________________n. 少数；少数民族
2. electric adj. 电的；用电的；电动的→________________adj. 与电有关的→________________n. 电
3. swell vi. (swelled, swollen) 膨胀；肿胀→________________adj. （身体部位）肿起的；肿胀的
4. bleed vi. (bled，bled)流血；失血→________________n. 流血；失血
5. desperate adj. 绝望的；孤注一掷的；非常需要的→________________adv. 绝望地；孤注一掷地→________________n. 绝望
6. practice n. & v. 练习；实践→________________adj. 切实可行的；实际的；实践的
7. tight adj. 牢固的；紧身的；绷紧的；严密的；（经济）紧张的 adv. 紧紧地；牢固地→________________adv. 紧紧地；牢固地；紧密地→________________vt. （使）变紧；（使）加紧

6 . Surfing the Internet has indeed brought us a lot of ______(益处). (根据汉语提示单词拼写)

7 . It is the airlines rather than Sanya Government that are ________(blame) for the high return air ticket. (所给词的适当形式填空)

8 . When a tomb is opened, fresh air disturbs the viruses, which, if ________ (breathe) in, can result in illness or even death. (所给词的适当形式填空)

9 . Many young soldiers has ___________ (流血) for the country since 1911. (根据汉语提示单词拼写)

10 . People today tend to make choices of their diets ________ (base) on what they believe. (所给词的适当形式填空)