单项选择题


A．save
B．saving
C．saved
D．to save
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单项选择题
A．outB．byC．inD．back
A．out
B．by
C．in
D．back
单项选择题
A．commit themselves toB．commit themselves onC．commute themselves toD．comply themselves to
A．commit themselves to
B．commit themselves on
C．commute themselves to
D．comply themselves to
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