Many people in the world do volunteer work. There are many volunteer works such as visiting old or sick people, teach poor children and so on. In my opinion, there are five main reasons why i do volunteer work. I want to bring happiness to poor and disabled children as well as boys who no have longer fathers and girls who no have mothers. I want to help these children be gone to school and teach them things which they usually learn from their parents. Beside, i also want to take care of old and sick people because i consider them as their relatives and hope to help them pass over loneliness and sickness. In the next summer vacation, if i have time, i'll enjoy some organisation with my friends. Finally, above all things, i think that the happiest people in the world are those who help to bring happiness to others.