use the corect form of the words given to complete the sentences 1.This volcano is dead,it has been (act)....... for more than a century. 2.The Earth would be a happy planet if human beings,animals and plants (peace)....co-exist. 3.The US is the world's largest economy,benefiting from an abundance of natural resources and high worker (produce) .... 4.The chemical (pollute).... from cars and factories make the air, water and soil dangerouslydirty. 5.You cannot imagine how (serious)..... the area was damaged by the flood.