完整原文
I believe volunteering is a highly meaningful activity because it helps others while bringing us personal growth. Last summer, I had the chance to work as a volunteer guide at a local elder care center, which was an unforgettable experience for me. First, I organized reading groups for the elderly, and later I taught them how to use simple apps to stay in touch with their families. Although I felt tired sometimes, seeing the happy smiles on their faces made me realize that giving is truly rewarding. Therefore, I encourage more teenagers to join volunteer work and make our community a warmer place together.