Tourists don't visit this museum very often
This museum isn't visited very often
Joseph Strauss designed the Golden Gate Bridge in 1917
The Golden Gate Bridge was designed by Joseph Strauss in 1917
They cleaned the window yesterday
The window was cleaned yesterday
Where did they invent gun powder?
Where was gun powder invented?
Where do they make these video recorders?
Where are these video recorders made?
Tourists spend a lot of money in London
A lot of money is spent in London
The secretary opens the mail every day
The mail is opened by the secretary every day
A gardener is watering the flowers now.
The flowers are being watered by a gardener now
Oscar Wilde wrote "The Picture of Dorian Gray" in 1890
"The Picture of Dorian Gray" was written by Oscar Wilde in 1890
The police arrested 15 people
15 people were arrested by the police
My mum makes good pizza
Good pizza is made by my mum
They publish his books
His books are published
The students are making arrangements for their graduation
Arrangements are being made by students for their graduation
Have they sent the package yet?
Has the package been sent yet?