English.
来源：学生作业帮助网 编辑：六六作业网 时间：2024/07/05 20:30:30
English.English. English.6.turnoff,7.usingplasticbag8.inthefuture9.serious10.reusing
English.
English.
English.
6. turn off ,
7. using plastic bag
8. in the future
9. serious
10. reusing