Нужно к 3 предложениям составить по 5 вопросов, вот:
Put 5 types of questions:
Industrial technology began with the development of the engine steam.
Scientists study a wide variety of subjects.
People can watch sports events on TV

1.Industrial technology began with the development of the engine steam, didn`t it?
Did industrial technology begin with the development of the engine steam?
Did industrial or commercial technology begin with the development of the engine steam?
When did industrial technology begin?
What began with the development of the engine steam?

2.Scientists study a wide variety of subjects, don`t they?
Do scientists study a wide variety of subjects?
Do scientists or professionals study a wide variety of subjects?
What do scientists study?
Who studies a wide variety of subjects?

3. People can watch sports events on TV, cannot they?
Can people watch sports events on TV?
Can people watch sports events on TV or on the radio?
Who can watch sports events on TV?
What can people watch on TV?