Dựa trên ngữ cảnh, đây là các đáp án đúng cho từng chỗ trống:

1. A. needy
2. B. what
3. C. books
4. A. learn
5. C. doing

Vậy câu hoàn chỉnh sẽ như sau:

"My school has a number of volunteer activities every summer. The activities include donating books to village children, tutoring kids in the neighbourhood, teaching English to primary students, reading books or cooking food for the needy. Our school started this programme five years ago. Every student can join one or two activities. In the beginning, we thought about what activities we wanted to do. Those who like reading could choose to collect and donate books. Those who are good at English could learn primary students. Finally, we signed up for the activities we chose. Our teachers often encourage us to stay committed. They also help us when we need it. We have a lot of fun and learn many things from doing the activities."