题目内容：
根据以下内容，回答题。The requirements for high school graduation have just changed in my community．As a result ,all students must 11 sixty hours of service learning, 12 they will not receive a diploma ．Service learning is academic learning that also helps the community． 13 of service learning include cleaning up a polluted river, working in a soup kitchen, or tutoring a student． 14 a service experience, students must keep a journal(日志) and then write a 15 about what they have learned．
Supporters claim that there are many 16 of service learning．Perhaps most importantly ,students are forced to think 17 their own interests and become 18 of the needs of others ．Students are also able to learn real-life skills that 19 responsibility, problem solving, and working as part of a team． 20 , students can explore possible careers 21 service learning．For example, if a student wonders what teaching is like, he or she can choose to work in an elementary school classroom a few afternoons each month．
22 there are many benefits, opponents(反对者) 23 problems with the new requirement．First, they 24 that the main reason students go to school is to learn core subjects and skills．Because service learning is time-consuming, students spend 25 time studying the core subjects．Second, they believe that forcing students to work without 26 goes against the law．By requiring service, the school takes away an individual' s freedom to choose．
In my view, service learning is a great way to 27 to the community, learn new skills, and explore different careers． 28 , 1 don' t believe you should force people to help others – the 29 to help must come from the heart． I think the best 30 is one that gives students choices: a student should be able to choose sixty hours of independent study or sixty hours of service．Choice encourages both freedom and responsibility, and as young adults, we must learn to handle both wisely．
__________ A．spend
B．gain
C．complete
D．save
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