GO
The teacher explains the lesson.
The lesson is explained by the teacher.
The students answered the questions.
The questions were answered by the students.
She has finished the project.
The project has been finished by her.
She will buy a new car.
A new car will be bought by her.
SLEEP
slept
They play football every weekend.
Football is played every weekend.
He painted the house last year.
The house was painted last year.
They have eaten all the cookies.
All the cookies have been eaten.
They will organize the event.
The event will be organized by them.
FLY
flown
She writes emails every morning.
Emails are written every morning.
They invited us to the party.
We were invited to the party.
We have completed the test.
The test has been completed by us.
He will send the letter tomorrow.
The letter will be sent tomorrow.
signed
Many tourists visit the ancient ruins every year.
The ancient ruins are visited every year by many tourists.
The company built a new bridge.
A new bridge was built by the company.
He has written three books.
Three books have been written by him.
The teacher will give the students a detailed explanation of the experiment.
A detailed explanation of the experiment will be given to the students by the teacher.
SHOW
shown
Scientists study climate change in different regions of the world.
Climate change is studied in different regions of the world by scientists.
They discovered a new planet in the solar system in 2014.
A new planet in the solar system was discovered in 2014.
Archaeologists have found ancient artifacts in the desert.
Ancient artifacts have been found in the desert by archaeologists.
Scientists will explore the possibility of life on Mars in the near future.
The possibility of life on Mars will be explored in the near future by scientists.