单项选择题

Medical care reform has become this country's most important public health ______.

A．question
B．stuff
C．matter
D．issue

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单项选择题

Mr. Smith said that he would be punctual for the appointment, ______ he were late

A．but what if
B．how about
C．and what about
D．so what

单项选择题

Is it ______ you were born that decides your nationality

A．there
B．anywhere
C．where
D．the country

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