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Last August Susan and forty-two other students got wet and dirty while removing six tons of garbage from the river running across their city. They cleaned up the river as part of a weeklong environmental camp. Like one in three American rivers, this river is so polluted that it’s unsafe for swimming and fishing. Still, Susan, who has just completed her third summer on the river cleanup, sees a change in this river. Environmental scientists praise the teenagers for removing garbage that can harm wild life. Water birds, for example, can choke on plastic bottle rings and get cut by scrap metal. When the cleanup started, garbage was everywhere. But this year the teenagers had to hunt for it in their boats. By the end of the six-hour shift, they had removed enough garbage to fill more than two large trucks. “Garbage in the river makes people begin to care about environmental issues,” Susan says. She hopes that when others read that she and her peers care enough to clean it up, maybe they would think twice before they throw garbage into the river.
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原文实录，希有帮助，升知明基另采纳为盼吵槐消！
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76.along
77.swimming
78.who
79.scientists
80.life
81.sharp
82.here
83..fill
84.care
85.before
望采纳正确答案李丛呀哪历樱烂配~
along/渗带
银行做around
swimming
who
scientists
land(不确定丛宴）
sharp
here
fill
care
before