一、在听了“蓝天救援队”志愿者的演讲后，同学们围绕其精神与价值展开热议。请阅读下面短文，用方框中所给单词或短语的适当形式填空。每个单词或短语限用一次。
|practice|ordinary|effort|succeed|
|make a difference|sign up|donate|
|teamwork|voluntary|miss|save|
Volunteering is a powerful way to help people in need. Many people 1. with organizations like Blue
Sky Rescue because they want to make a positive difference. The work is 2. ，so they are not paid. Instead, the real reward(回报) comes from helping others. These volunteers often face difficult conditions. They may go without food or sleep while searching for 3. people after natural disasters.
Through this experience, volunteers learn many 4. life - saving skills. More importantly, they come to understand the importance of 5. as the key to 6. rescues. They realize that every life has great value and is worth 7. . Although the work is challenging and sometimes even dangerous, seeing the smiles on the faces of those they help makes all the 8. worth it.
Anyone can become a volunteer. You don't need to be a hero, just a(n) 9. person with a willing heart. Even young people can take part, and many of them 10. their pocket money to support the cause(事业). By working together, we can all 11. . Why not join us today? Your help could mean the world to someone.

1. sign up
2. voluntary
3. missing
4. practical
5. teamwork
6. succeeding
7. saving
8. efforts
9. ordinary
10. donate
11. make a difference