单项选择题

________ a week goes by without some educational problem arising.

A．Infrequently
B．Hardly
C．Practically
D．Merely
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单项选择题
He ________ so much work that he couldn't really do it efficiently.
A．put on
B．turned on
C．brought on
D．took on
单项选择题
The terrorists might have planted a bomb on a plane in Athens, get to ________ when it arrived in New York.
A．get off
B．carry off
C．go off
D．come off
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