Задание № 11. Закончите предложение, выбрав соответствующий вариант окончания. The problem of protecting natural water resources has grown very pressing for many countries since… a) nowadays b) the beginning of the second half of the 20th century c) the beginning of the second half of the 19th century
The problem of protecting natural water resources has grown very pressing for many countries since the beginning of the second half of the 20th century