However, other areas of science are also (developing). medicine, biology, archeology and many other sciences (have achieved) excellent results. we (do) everything to maintain a high quality of life now. many processes (are automated) and people (get rid) of many unpleasant things and difficulties that they encountered in the past.

объясните, времена и почему именно они там поставлены

Ровног    3   27.11.2019 23:05    0