阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
Joris Hutchison, 10 years old, of Seattle, has worked hard all year to save cheetahs（猎豹）from the very real threat of extinction. He has raised more than $14,000 to purchase GPS devices, ____ follow and protect the animals. He earns money by selling lemonade, flowers and T-shirts, and by ____(organize) skating parties and a garage sale. What moved the public ____(be) that Joris donated all that he raised to a wildlife conservation organization and shelter in Namibia where he and his mother have volunteered for ____ past three summers.
As the group's ____(young) of all the volunteers, Joris prepares food, cleans enclosures（围场）, and creates improvement ____(item) for the cheetahs that live there, all of whom ____(injure) or raised by human beings in the past. The shelter protects cheetahs in the wild by convincing farmers not ____(shoot) the animals and instead, to allow the ones accused ____ killing farm animals to be fixed with GPS devices. “I've learned that everyone can make a ____(different), even if you're just a kid!” Joris told Gloria Barron Prize for Young Heroes. “You just have to start somewhere.”
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