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We feel         our duty to make our country a better place.
#55871
A
it
B
this
C
that
D
one
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–Are these your rulers? – Yes, ________.
#55827
A
these are
B
it is
C
they are
D
they aren’t
 Are ________ her parents?
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A
this
B
these
C
she
D
that
—Where is Beijing?—        here.
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A
It is
B
He is
C
She is
D
They are
        of four buses will take you to the station . We can take        of them .
#55762
A
Any ; every
B
None ; any
C
All ; any
D
Neither ; none
Scientists are working hard to make _______ possible for people to live on Mars in the future.
#55873
A
it
B
that
C
this
D
one