①Korea International Cooperation Agency (KOICA) was started in 1991 to carry out such efforts.②Since then, KOICA created ⓐa number of helping programs for its developing neighbors. ⓑThe "Dispatch of Korea Overseas Volunteers" (KOVs) is one of these program. 

③A number of the KOVs are sent to developing countries around the world. ④ The main fields of KOVs' service include teaching and public health, __________________. ⑤ These volunteers live and work together with the local people.