help!help!The paper factory ______(be）open for 2 years ,it's polluted many rivers.
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/25 21:38:50
help!help!Thepaperfactory______(be）openfor2years,it''spollutedmanyrivers.help!help!Thepaperfactory___
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
楼上 正答。