Exercise 3: Choose the odd one out.
1. A. donate B. provide C. food D. encourage
2. A. clean B. street C. house D. wall
3. A. clothes B. educate C. blood D. money
4. A. money B. blood C. donate D. waste
5. A. homeless B. disabled C. people D. poor
6. A. volunteer B. clothes C. books D. food
7. A. help B. draw C. paint D. school
8. A. individual B. essential C. environmental D. service
9. A. blood B. homework C. students D. tutors
10. A. elderly B. grandparents C. nursing home D. orphan
