单项选择题

Many a teacher in our department ______ abroad.

A．have been
B．has been
C．have go
D．has go
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单项选择题
The project to build five new schools in this region ______ by the end of the next year.
A．will have been completed
B．will have completed
C．is being completed
D．has been completed
单项选择题
The advisers propose that the plan ______ postponed for a few weeks.
A．been
B．to be
C．be
D．being
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