Choose the best answer and complete the passage. Each nation has many good people who help to take care of others. For example, some high school and college （1） in the USA often spend many hours as volunteers(志愿者) in the orphanages(孤儿院) or rest homes. They read books to the people in these places， or they just visit them and play games with them or （2） with them about their classmates and school life. Other young volunteers go and work in the （3） of people who are sick or old. They paint, clean up or repair their houses and do their shopping or mow(割；修剪) their lawns. For boys who no longer have （4） , there is an organization called Big Brothers. College students and other men take these boys to baseball games or fishing trips and help them get to know things that boys usually learn from their fathers. Each city has a number of clubs where boys and girls can go to play games. Some of these clubs show films or organize short trips to the mountains or some places of interest. Most of these clubs use a lot of high school and college students as volunteers because they are young enough to know the （5） of young boys and girls. Volunteers believe that some of the （6） people in the world are those who help to bring happiness to others.（1）A．teachersB．studentsC．headmastersD．guards（2）A．liveB．stayC．talkD．play（3）A．homesB．clinicsC．hospitalsD．offices（4）A．brothersB．fathersC．mothersD．sisters（5）A．differenceB．ageC．nationalityD．needs（6）A．luckiestB．funniestC．happiestD．saddest