Đọc đoạn văn và trả lời câu hỏi

Each country has many good people who take care of others. For example, some of students in the United States often spend many hours as volunteers in hospitals, orphanages or homes for the elderly. They read books to the people in these places, or they just visit them and play games with them or listen to their problems.
Others young volunteers go and work in the homes of people who are sick or old. They paint, clean up, or repair their houses, do the shopping. For boys who don't have fathers, there is a organization called Big Brothers. College students and other men take these boys to basketball games or on fishing trips and help them to get to know things those boys usually learn from their fathers. 
1) Do some of students in the United Startes open a few hours as volunteers ?
2) What activities do the volunteers do for the elderly ? 
3) What do colunteers usually do to help those who are sick or old in their homes ?
4) Is there an organiztion called Bid Brothers for boys without fathers ?