Complete the sentences with ower, through, across, and into

Завершить предложения с более чем, через, поперек, и в

Прокладка электрических сетей.- Laying of electrical networks.
Монтаж электрического оборудования и кабелей.- Installation of electrical equipment and cables.
Ремонтные работы с линиями электропередач. - Repairs to power lines. Ввод в эксплуатацию оборудования.- Putting into operation of the equipment.Прокладка электрических сетей в помещениях. - Laying of electrical networks indoors.Обучение персонала технике безопасности при работе с электрическими приборами и высоковольтными сетями. - Training of personnel safety when working with electrical equipment and high voltage networks.
Обучение персонала правилам и методам оказания первой при поражении электрическим током. - Training of personnel rules and first aid at electric shock.

Ballet dancers achieve the necessary result after many years of hard training.

1) Ballet dancers achieve the necessary result after many years of hard training, don't they?
2) Do ballet dancers achieve the necessary result after many years of hard training?
3) Don't ballet dancers achieve the necessary result after many years of hard training?
4) Who achieves the necessary result after many years of hard training?
5) Do ballet dancers achieve the necessary result after many years or many months of hard training?
6) Do ballet dancers or clog dancers achieve the necessary result after many years of hard training?
7) Why do ballet dancers achieve the necessary result after many years of hard training?
8) How often do ballet dancers achieve the necessary result after many years of hard training?
9) Under what conditions do ballet dancers achieve the necessary result?
10) In what countries do ballet dancers achieve the necessary result after many years of hard training?