1.
It's a big company. It employs (Active Voice) two hundred people. – Two
hundred people are employed by this company.
2.
This supermarket was built (Passive Voice) here a year ago. – They built
this supermarket here a year ago.
3.
People don’t use (Active) this road very often. – This road isn't
used very often.
4
A prize will be given (Passive) to whoever solves this equation. – Whoever
solves this equation will receive a prize.
5.
Many accidents are caused (Passive) by dangerous driving. – Dangerous
driving causes many accidents.