qingxsky 2014-12-27

we must take effective actions to avoid the plant producting waste water pollution。

華陽做題家 2014-12-27

We must take effective measures to stop this factory from dumping waste water。

什麼lK4gc 2014-12-27

We must take measures to stop the factories pouring waste water into rivers。

最愛我愛下雪 2014-12-27