题目

More and more public schools in America make it a rule that students must finish a certain amount of community service_61_they are allowed to graduate from high school.They work on projects like making the environment better or_62_(feed) homeless people. Many school systems in the United States now ask students_63_(do) some kinds of community service as part of their studies.Students involved in service projects help_64_(they) as well as their communities.They learn about the needs of people and aid_65_(organize).For this reason,holidays_66_(become) the prime period for volunteer work so far.Volunteers get no pay,but experts point out that it is_67_excellent opportunity to learn and practice new skills. According to the statistics,more than 60% of young Americans have participated_68_different kinds of community service,such as cooking for homeless people,or painting old buildings,etc.Some students like to do their volunteer work in_69_(centre) parts of America,but the majority of teens prefer to do it in their hometowns.Tom,a 16-year-old middle school student in California,often_70_(do) community service in a local hospital.He works 16 hours every week either receiving calls at the information desk,or helping push patients back to their wards. 答案：61.before                  62.feeding             63.to do              64.themselves               65.organizations         66.have become            67.an             68.in                     69.central                      70.does

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