help!help!The paper factory ______(be)open for 2 years ,it's polluted many rivers.
来源:学生作业学帮网 编辑:学帮网 时间:2024/06/28 19:49:27
help!help!The paper factory ______(be)open for 2 years ,it's polluted many rivers.
has been
have been
楼上 正答。
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来源:学生作业学帮网 编辑:学帮网 时间:2024/06/28 19:49:27
help!help!The paper factory ______(be)open for 2 years ,it's polluted many rivers.
has been
have been
楼上 正答。