1.The study performed ... complex mechanisms.
a.revealed
b.reveal
c.revealing
d.when revealed
2.Our company________ parts for the automobile industry.
a.produces
b.don’t produce
c.produce
d.does produce
3.I _________ about your visit some days ago.
a.knew
b.knowed
c.didn’t knew
d.did know
4.They _________ carefully income statement and balance sheet last week.
a.study
b.were studying
c.studyed
d.studied
5. ... journals is important for every scientist.
a.We read
b.While reading
c.Reading
d.Read
6.Potatoes, a popular food in Ukraine, are most delicious ... .
a.when roasting
b.roasting
c.roast
d.when roasted
7.They said that the new school ... in that area.
a.is being built
b.will be built
c.builds
d.would be built
8.I can't say anything because my words ... against me.
a.will use
b.are being used
c.will be used
d.are using