单项选择题

______ four years since I joined the Army.

A．There was
B．There is
C．It was
D．It is
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单项选择题
I spoke to several people at the cocktail party. Was John ______ one with the red hair
A．/
B．the
C．a
D．an
单项选择题
Nobody ______ to speak for more than five minutes.
A．have
B．has
C．had
D．have been
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