单项选择题A．Most of them would be indifferent and keep on throwing garbage into the river.B．They would join the students in changing the situation.C．They would become more aware of the pollution problem.D．They would think twice before they went swimming or fishing in the river.

单项选择题A．She has a relative who once lived there.B．She is going to see her uncle there.C．She will visit the city soon.D．She used to have an apartment there.