单项选择题

A．in which
B．from which
C．of which
D．by which
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单项选择题
A．chanceB．timeC．momentD．occasion
A．chance
B．time
C．moment
D．occasion
单项选择题
A．as usualB．as wellC．as beforeD．as such
A．as usual
B．as well
C．as before
D．as such
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