单项选择题

A．trial
B．experiment
C．proof
D．promise
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单项选择题
A．agingB．agedC．being-agedD．age
A．aging
B．aged
C．being-aged
D．age
单项选择题
The flat offered in ad D ______.
A．is expensively furnished
B．is on the first floor
C．can only accommodate four people
D．is only available for a short period
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