单项选择题

A．disappeared
B．reappeared
C．flew
D．happened
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单项选择题
A．muchB．enoughC．timeD．before
A．much
B．enough
C．time
D．before
单项选择题
Who was the first to put forward a proposal to use stamps
A． Rowland Hill in England.
B． Rowland Hill in America.
C． Rowland Hill in France.
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