单项选择题

Between 1975 and 1996, the number of overseas visitors expanded ______ 27% on average each year.

A．in
B．by
C．for
D．to
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单项选择题
Had I known the result, I ______ you to tell me.
A．would not ask
B．would not have asked
C．had not asked
D．have not asked
单项选择题
In the ______ half of the 17th century those cities became even more prosperous.
A．latter
B．latest
C．later
D．late
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