help!help!The paper factory ______(be)open for 2 years ,it's polluted many rivers.
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![help!help!The paper factory ______(be)open for 2 years ,it's polluted many rivers.](/uploads/image/z/13055600-56-0.jpg?t=help%21help%21The+paper+factory+______%28be%EF%BC%89open+for+2+years+%2Cit%27s+polluted+many+rivers.)
help!help!The paper factory ______(be)open for 2 years ,it's polluted many rivers.
help!help!The paper factory ______(be)open for 2 years ,it's polluted many rivers.
help!help!The paper factory ______(be)open for 2 years ,it's polluted many rivers.
has been
have been
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