Поскольку мальчики были основной пр

Поскольку мальчики были основной проблемой в городе полиция пристально следила за ними

Результаты (английский) 1:

Since boys were the main problem in the police closely followed them

Результаты (английский) 2:

Since the boys were a major problem in the city police closely followed them

Результаты (английский) 3:

because the boys were the major problem in the town, the police had been closely monitoring them