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Do you know the answer ________ the question?
A．to B．of C．at D．in
Do you know the answer the question?
A．with
B．to
C．of
D．on
Do you know the answer _________ the question?
to
with
of
on
at
in
－Do you know the answer ________ the question?
－________．It’s easy．
to, Yes
of, Yes
for, Yes
in, No