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I have to buy _________of the two books because I don’t know which to choose.
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A
every
B
all
C
one
D
both
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 Yi Ran is a girl. ______ is in Class 5, Grade 7.
#53050
A
She
B
He
C
It
D
her
These postcards are ________.
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A
they
B
theirs
C
their
D
them
— What's wrong with my son, doctor?— _________. Just a cold.
#37290
A
Something serious
B
Serious something
C
Nothing serious
D
Serious nothing
---How many students are there on the playground? ---_________.
#53445
A
Nobody
B
Nothing
C
None
D
None of them
I forget to bring a pen．Would you lend me ____?
#54931
A
one
B
that
C
it
D
this