Choose the best answer A, B, C or D to complete the sentences.
1. I’m writing to apply __________ a volunteer position at the local centre of community development.
2. Volunteers work in different conditions, so they must be ____________ to changing situations.
3. Someone has made a big ______________to the school. We’ve got enough money now to buy some new computers.
4. ___________ is an organization that tries to achieve social or political aims but is not controlled by a government.
5. Last summer, while I _________ the shopping mall, I ______________ an advertisement for volunteers.
