单项选择题

There is no light in the dormitory. They must have gone to the lecture, ______

A．didn't they
B．don't they
C．mustn't they
D．haven't they
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单项选择题
The news was a terrible blow to her, but she will ______ the shock soon.
A．get out
B．get through
C．get off
D．get over
单项选择题
I have worked with him for some time and have found that he is ______ than John.
A．more efficiently a worker
B．a more efficient worker
C．more an efficient worker
D．a worker more efficiently
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