C. 请根据上下文，将下面句子还原到短文中。
Volunteering means you spend some of your free time helping others. You may volunteer to help other people, and you can also volunteer to protect animals, the environment, or any other thing that you care about. 1. If you're worried about something, doing something meaningful can be a great way to deal with your problems. 2. It's good to know that someone lives a better life because of your help. Volunteering lets you spend some time on others for a while.
Lots of people enjoy volunteering. Volunteer experiences often put people in a different environment. 3. Volunteering is a great way to have fun with your family. Here is some advice on what you can do together.
Pick up rubbish in a park or along a road.
Plant trees or flowers in your community.
4.
Give meals to people who are elderly or ill at home.
Clean up a school or other public buildings.
Some schools ask students to spend some of their time volunteering. It gives them a taste of responsibility. 5. A volunteer job can even help some students decide what they want to do when they grow up. So what are you waiting for? Make a plan to start volunteering today!

1. C
2. E
3. B
4. A
5. D

1. 空1处，前文介绍志愿活动的含义，后文提到做有意义的志愿活动可以帮你处理自身的烦恼，C项“志愿活动既帮助他人，也能帮助你自己”承上启下，符合语境。
2. 空2处，后文提到有人因为你的帮助过上更好的生活，E项“做志愿活动意味着一件非常重要的事——你在世界上发挥了自己的作用”和后文语义衔接，对应“他人因你的帮助生活变好”的内容。
3. 空3处，前文说志愿经历常常会让人们身处不同的环境，B项“这让人们以全新的方式看待自己的生活”中的it指代前文的“不同环境的志愿体验”，逻辑通顺。
4. 空4处，此处是列举适合全家一起做的志愿活动，A项“在流浪者收容所提供食物”是具体的志愿活动，和前后的公益行动并列，符合语境。
5. 空5处，前文提到志愿活动能让学生体会责任感，后文提到志愿甚至能帮学生规划未来的职业方向，D项“志愿活动也能帮助学生了解关于自身的重要事情”衔接前后内容，符合逻辑。