单项选择题

A series of seminars ______ scheduled.

A．has
B．is
C．/
D．are
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单项选择题
Professor Johnson’’s retirement_______from next January.
A．carries into effect
B．takes effect
C．has effect
D．puts into effect
单项选择题
The membership card entitled him_________certain privileges in the club.
A．on
B．in
C．at
D．to
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