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---Are these your books?--- Yes, ________.
#44092
A
I am
B
these are
C
they are
D
you are
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 All of the flowers now raised here have developed from those _______ in the forest.
#86237
A
once they grew
B
they grew once
C
they once grew
D
once grew
They usually have lunch at school, ________?
#44208
A
haven’t they
B
do they
C
don’t they
D
have they
All but Tom ___that film before.
#86343
A
has been
B
have seen
C
must see
D
had seen
We can see only one of the doors ______.
#44082
A
are opened
B
is closed
C
closes
D
are closed
The number of students who took part in the competition last week ________ more than 1500.
#85938
A
reach
B
were
C
is
D
was