The janitor cleans the windows every Monday.
The windows are cleaned every Monday (by the janitor).
The Romans built this bridge in 1602.
This bridge was built in 1602 by the Romans.
The dog was taken out by Kim last night .
Kim took the dog out last night.
The man sells coconuts at the beach.
Coconuts are sold at the beach (by the man).
George Bernard Shaw wrote this book.
This book was written by George Bernard Shaw.
Dinner was cooked by Melissa last night.
Melissa cooked dinner last night.
The famous architect James Jackson renovates about a hundred houses each year.
About a hundred houses are renovated each year by the famous architect James Jackson.
Alexander Fleming discovered penicillin.
Penicillin was discovered by Alexander Fleming.
A new vaccine has been developed by scientists.
Scientists have developed a new vaccine.
Most people consider the iPhone to be the best phone ever.
The iPhone is considered to be the best phone ever by most people.
People didn’t use credit cards much 30 years ago.
Credit cards weren’t used much 30 years ago.
Cash is used by fewer and fewer people.
Fewer and fewer people use cash.
Renowned pianists usually play 20 songs during a concert.
20 songs are usually played by renowned pianists during a concert.
Picasso painted some of the most expensive paintings ever.
Some of the most expensive paintings ever were painted by Picasso.
It is said that Julia always comes across as a very shy person.
They say that Julia always comes across as a very shy person.