单项选择题

A．which
B．that
C．at which
D．at that
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单项选择题
A．onB．aboutC．forD．to
A．on
B．about
C．for
D．to
单项选择题
A．run throughB．run overC．go onD．go through
A．run through
B．run over
C．go on
D．go through
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