1. (2020九下·青田竞赛) 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.

Some .

Some .

Others .

I think .