单项选择题

As there is a power cut in the university, the president has to ______ the meeting

A．call on
B．call out
C．call off
D．call for
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单项选择题
My transistor radio is out of work. It _____.
A．need to be repaired
B．need repairing
C．needs repairing
D．needs to repair
单项选择题
The Smiths asked the lady at the information desk for a ______ room for the night.
A．couple
B．twice
C．double
D．pair
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