After visiting Harbin, most of the foreign friends said they would never forget the time ________ they had spent.
#67175
A
that
B
what
C
when
D
at which
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The Charles Dickens Museum in Doughty Street is the only one of his London homes to survive, ________ he wrote Oliver Twist.
#67138
A
where
B
that
C
which
D
what
Is this factory ___________?
#70725
A
the one your father works in
B
where your father works
C
which your father works
D
your father works in