—The pollution problem here seems to get more and more serious. --Yes. Something_____about it. A. mu...
2023-02-23 04:53:25 49次 2011-2012学年四川省江油市九年级中考适应性考试（三）英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
—The pollution problem here seems to get more and more
serious.
--Yes. Something_____about it.
A. must do B.
must be done
C. is doing D. had
been done
本题链接：
