people. Over 20 million people were engaged (2) _________ voluntary activities in 2013. Volunteering means giving up time to do work of (3) _________ to the community. It can be based in the UK or overseas. Volunteering can take many forms, from working with children with (4)_________ difficulties, in an animal hospital, or planting trees. (5) _________ London won its bid to host the 2012 Olympics, up to 70,000 (6) _________ were needed to help ensure the games were a success. 14. a. ever b. any c. never d. before 15. a. with b. in c. to d. for 16. a. comfort b. benefit c. contribute d. profit 17. a. learn b. learned c. learning d. learnt 18 a. When b. While c. Where d. What