The world’s first motorways _______________ (build) in Germany in the 1930s.
were built
The boy killed the spider.
The spider was killed (by the boy)
Smoking _______________ (not allow) on planes.
is not allowed
They clean the windows every week.
The windows are cleaned every week.
People eat 40 million hamburgers every day.
40 million hamburgers are eaten every day.
This photo __________________(take) by my grandfather when I was five.
was taken
This tree is very old. It ___________________(plant) in the 19th century.
was planted
We can't identify the writer of the poem
The writer of the poem can't be identified.
Mary Shelley wrote the novel Frankenstein.
The novel Frankenstein was written by Mary Shelley.
My grandmother made the cake yesterday.
The cake was made (by my grandmother) yesterday