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Ответ:

I) was founded

was found

were held

were made

II)was built

was seen

wasn't built

was completed

III)telephone was invented in England

your computer was infected by a virus

my clothes were washed last night

the apples were harvested before Friday

this sing was sung everuwhere in 1970

flowers was planted in thus area

IV)spanish was understood well by them

a new car was bought by my friend

the bathroom was cleaned by John

the window was closed by teacher

handball was played by girls yesterday

our cat wasn't bite by your dog

our car was repaired by mechanic last month

the fire alarm was tested by electricians

the photos was took by Frank in 2009

president's in independent Ukraine was elected by people