Here are the words filled in the gaps:

A volunteer is someone who "works for free" or someone "working of their own free (1) **will**." People choose to volunteer for many reasons. Some people choose to do this (2) **because** they want to help, and others hope that they might get jobs if they do their volunteer work with care. Parents often volunteer in their children's classrooms or help (3) **raise** money for their children’s schools. No matter the reasons, becoming a volunteer helps many people feel good about themselves. There is something about "working for free" that (4) **allows** people to feel that they are making a positive difference in their community. Employers will often choose to hire someone who has volunteered for them because they have already proven themselves. Whatever the reason, becoming a volunteer will open new doors for you and you can bet that you will feel like you really did make a (5) **difference**!