Work in groups. Which of the following volunteer activities would you be interested in? Why? (Làm việc nhóm. Bạn sẽ quan tâm đến hoạt động tình nguyện nào sau đây? Tại sao?) - Tutoring children at an orphanage - Recycling - Picking up trash - Planting trees - Helping the elderly people - Rescuing animals - Helping on a farm