Like one in three American rivers, this river is so polluted that it’s unsafe for swimming or fishing. Still, Susan, (27)_____ has just completed her third summer camp on the river cleanup, sees a change in this river.
答案: 27 who
帮我翻译一下,并且讲一下它的语法谢谢!
能否再帮我答一个:
http://zhidao.baidu.com/question/1494246072549324339.html?quesup2&oldq=1
谢谢!