Поставить вопросы различных типов к предложению Theplant was put into operation last year.

Question

Поставить вопросы различных типов к предложению Theplant was put into operation last year.

Answer 1

What was put into operation last year?
Was the plant put into operation last year?
The plant was put into operation last year, wasn't it?
When was the plant put into operation?
Was the plant put into operation last year or two years ago?