摘要：13．The story took place in Europe in the days before automobiles everyone used horses． A．which B．where C．when D．as
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The story took place in Europe in the days before automobiles ________ everyone used horses．
[ ]
A．
which
B．
where
C．
when
D．
as
The story took place in Europe in the days before automobiles ________ everyone used horses．
[ ]
A．
which
B．
where
C．
when
D．
as