Using a non-finite verb form: People who are sentenced to life i

Using a non-finite verb form: People who are sentenced to life in prison from now on will have to pay for their keep if the proposed new law goes into effect.
【正确答案】：People sentenced to life in prison from now on will have to pay for their keep if the proposed new law goes into effect.
【题目解析】：过去分词sentenced做定语修饰People。