Fifty scientists _______________ (take part) in the International Environment project so far.
have taken part
Mary Shelley wrote the novel Frankenstein.
The novel Frankenstein was written by Mary Shelley.
This photo __________________(take) by my grandfather when I was five.
was taken
The world’s first motorways _______________ (build) in Germany in the 1930s.
were built
This tree is very old. It ___________________(plant) in the 19th century.
was planted
They clean the windows every week.
The windows are cleaned every week.
You must not waste your money on stupid things.
Your money must not be wasted on stupid things.
Smoking _______________ (not allow) on planes.
is not allowed
People eat 40 million hamburgers every day.
40 million hamburgers are eaten every day.
By the time we got to the party, all the pizza _______________ (eat).
had been eaten
Don’t turn round! I think we _______________ (follow)!
are being followed
The 2022 Football World Cup _______________ (hold) in Qatar.
will be held
A guide will take you to your seat.
You will be taken to your seat by a guide.
My grandmother made the cake yesterday.
The cake was made (by my grandmother) yesterday
The boy killed the spider.
The spider was killed (by the boy)
We can't identify the writer of the poem
The writer of the poem can't be identified.