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