Complete the following text with right forms of the verbs given in the box :

throw	kill	work	have	release
be	ensure	live	originate	pollute

Rivers generally (a)______   from a mountain or a lake. They(b)_________ very much important for our existence and economy. But unfortunately we are (c)___________ our rivers by throwing industrial and domestic wastes. Most of the industries (d)_________ waste treatment plants. These kinds of industries are (e)__________ liquid wastes and continuously (f)________ the water. Our unconscious people also (g)_________ different kinds of waste materials into rivers. So, to keep the existence of fishes and other species (h)__________ in the water is impossible. It is high time the government and the people (i)__________ together to save the rivers. Otherwise a happy, prosperous and pollution free environment can't be (j)________ for the next generation.