Поставьте слова в скобках в правильную форму: human beings are characterized not only by their (intelligent) but by their (able) to use technology to shape their environment. the (discover) of how to use fire was one of the most important events in the history of our species and the (invent) of the plough and the wheel were also significant (develop). it is difficult to imagine what our (civilize) would be like without technology
