Условие:
Определите, какой из предложенных вариантов является эквивалентным, обращая внимание на функции слова «оne» («оnes»). This led one to regard this problem as very complex.
This problem is very complex according to everyone's opinion.
One should not regard the problem complex until he (she) solves it.
One of the most complex problems is solved.
