单项选择题


A．advance
B．in advance
C．advanced
D．advancing
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单项选择题
A．thatB．whichC．whatD．of which
A．that
B．which
C．what
D．of which
单项选择题
A．littleB．a littleC．fewD．a few
A．little
B．a little
C．few
D．a few
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