Three teenagers offered to do some voluntary (志愿的) work during the school holidays. The first teenager was Betty did some voluntary work in a children's hospital. The children there all got serious illnesses. They organized a painting competition for the children. Betty met a girl (call) Cindy. She wanted to paint a picture of the park close to her home. Betty went to take some photos of the park. Cindy used them her painting.
Mark and his mother met some children without parents. They taught the children to tell stories. This helped them express their feelings. They spent time with a girl, Vivian. Her parents died in car accident and she was (happy) and very lonely. She needed friendship.
The (three) teenager, Annie, wanted to help disabled children. They have trouble (walk) or moving. She taught them to sing because music could make them happy and peaceful. She met a boy. Tim. He hurt his legs, he had lots of courage (勇气). Annie hopes that Tim's spirit will cheer up more disabled children.
Betty, Mark and Annie got unusual (experience) through the volunteer work.