单项选择题


A．proposed
B．developed
C．supplied
D．offered
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单项选择题
A．agoB．pastC．aheadD．before
A．ago
B．past
C．ahead
D．before
单项选择题
A．happilyB．occasionallyC．reluctantlyD．accurately
A．happily
B．occasionally
C．reluctantly
D．accurately
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