1 . 现在有越来越多的青少年投入社区服务活动。请你阅读下列三幅图，然后各用一句话对其描述，最后用一句话对参与社区活动进行评价。
      
More and more teenagers are becoming volunteers of their neighborhood.
1. Some _____________________________________________________.
2. Some _____________________________________________________.
3. Others ____________________________________________________.
4. I think ____________________________________________________.