Directions: After reading the passages below, fill in the blanks to make the passages coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

Last August Susan and forty-two other students got wet and dirty while removing six tons of garbage (25)_____ the river running across their city. (26)_____ 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 or fishing. Still, Susan, (27)_____ has just completed her third summer camp on the river cleanup, sees a change in this river. “Since we started three years ago, the river is getting a lot (28)_____(clean),” she says. Environmental scientists praise the teenagers for removing garbage (29)_____ can harm wild life. Water birds, for example, can die of plastic bottle rings and get cut by tiny metals. Three years ago, when the cleanup started, garbage was everywhere. But this year the teenagers can row their boats fast. By the end of the six-hour cleanup, they (30)_____(remove) enough garbage to fill more than two large trucks. “(31)_____(see) all that 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 (32)_____(clean) it up, maybe they would think twice before they throw garbage into the river.