The Passive Voice

Builders built the Big Ben in 1843.

One day the scientists will discover the cure for Covid-19.

Some people have found a World War II bomb.

In 1964 Martin Luther King won the Nobel Peace Prize.

The government is going to build a new hospital.

Someone has to finish the job.

I had cleaned all the windows before the storm.

Someone is using the computer without permission.

Where did they find the book?

People shouldn't throw litter on the ground.