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One afternoon my father and I go fishing on

1£®________

a riverside£®We found the water very dirty

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that we couldn¡¯t see the bottom£®We also found

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some rubbish or dead fish flowing on the water£®

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That afternoon, my father and I caught a smaller

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fish£®Why do the fish in the river die?That was

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because of a lot of factories along the river

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always poured its waste water and rubbish into

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the river and the water got polluting£®Thus,

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most of the fish in the river was killed£®

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