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Almost every area of human activity (witness) innovation. The 20th century (start) with steam-powered ships and ended with the space missions. By the turn of the century, automobiles already (replace) horses. Later, antibiotics (save) millions of lives. For a couple of decades people (take) their first small steps into space until they (make) a leap on the Moon surface.

nikita11111113    3   31.05.2020 21:10    128