3a Read this article. What do Mario and Mary volunteer to do? 3a Read this article. What do Mario and Mary volunteer to do? Mario Green and mary brown, student volunteers at Riverside High School, give up seven hours a week to help others. Mario Green and mary brown from Riverside Middle School sacrifice several hours a week to help others. Mario likes animals and wants to be an animal doctor. Mario likes animals and wants to be an animal doctor. He volunteers in an animal hospital every Saturday morning. He volunteers in an animal hospital every Saturday morning. Mario believes this will help him find his dream job in the future. Mario believes this will help him get his ideal job in the future. "It's hard work," he said, "but I want to learn more about how to take care of animals." "It's hard work," he said, "but I want to learn more about how to take care of animals. I have a strong sense of satisfaction. When I saw the animals getting better and better and the happy expression on their owners' faces, "I felt a strong sense of satisfaction. Mary is a book lover. She was able to read by herself when she was four years old. Mary is a book lover. She was able to read by herself when she was four years old. Last year, she decided to take part in a volunteer extracurricular reading program. Last year, she decided to participate in the selection of a volunteer extracurricular reading program. She still works there once a week to help children learn to read. She still works there once a week to help children learn to read. " The children are sitting in the library. "The children are sitting in the library, but you can see from their eyes that they have embarked on a different journey with each new book. But in their eyes, you can see that each new book has made them experience a different journey. Being a volunteer here is a dream come true for me. Being a volunteer here is a dream come true for me. I can do what I like and help others at the same time. " I can do what I like and help others at the same time. "