单项选择题

A．been used to
B．used to
C．been used for
D．used for
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单项选择题
A．whichB．thatC．thoseD．they
A．which
B．that
C．those
D．they
单项选择题
A．SpontaneouslyB．UniquelyC．KindlyD．Strangely
A．Spontaneously
B．Uniquely
C．Kindly
D．Strangely
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