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Plastic bags are provided for our convenience but they have also the pollution o

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Plastic bags are provided for our convenience but they have also the pollution o

Plastic bags are provided for our convenience but they have also _________ the pollution of the environment．

[]A．

adapted to

B．

turned to

C．

contributed to

D．

looked forward to

试题答案

答案：C

标签：convenienceourbuthavethey

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