单项选择题

Were it not for their support and help, we ______ able to finish the task ahead of time.

A．were not
B．should not have been
C．are not
D．would not be
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单项选择题
Williamsburg has now been restored so that it looks as it ______ during the 18th century.
A．could
B．would
C．was
D．did
单项选择题
Mary is as vain as peacock and always wants to be the ______ of attention.
A．sight
B．emphasis
C．focus
D．object
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