When the construction of the new factory came to the end in European village, a pump was put in. Then, all the settlers (defeat) by a severe disease characteristic was similar to cholera. An expert physician who was instructed to attend to the victims and handle this case showed great enthusiasm, he didn't foresee that it was a hard challenge. After simple enquiry, he announced that it was the (pollute) water that made the people (suffer) from the disease. But without positive (evident), people suspected and rejected his view, (say) the theory he put forward made no sense. Being much (strict) with himself than before, he contributed himself to the case. Apart from making enquiries, he made detailed charts and analyzed the data carefully. Finally, he drew a scientific (conclude), linking the disease to the radium in the pump. He found out why people there got sick immediately.
