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Perfect Passives

Active to Passive

Change these sentences from active to passive.

Someone has shot the president!	The president .
By 2050, scientists will have discovered a cure for cancer.	By 2050, a cure for cancer .
By 1pm, the cleaners had cleaned all the hotel bedrooms.	By 1pm, all the hotel bedrooms .
In 100 years, people will have forgotten Harry Potter.	In 100 years, Harry Potter .
By 2040, the government will have banned smoking.	By 2040, smoking completely.
People have played football for hundreds of years.	Football for hundreds of years.
Has anyone ever sent you a Valentine's Day present?	a Valentine's Day present?
By July, builders had built 10 houses in my street.	By July, 10 houses in my street.

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Active or passive?

Choose the best word(s) to complete these sentences.

By 1920, the first talking films ... had made had been made .
I'm afraid all the food ... has eaten has been eaten .
In 100 years, all the rainforests ... will have cut will have been cut down.
I ... had taught had been taught to swim by the time I was 8.
Alexander Fleming ... had discovered had been discovered penicillin by the Second World War.
I hope aliens ... will have visited will have been visited Earth before I die.
By the time I'd finished high school, I ... had shouted at had been shouted at by almost all my teachers.