单项选择题

Peter felt very guilty for not being able to reunite with his family on Christmas Eve, so he decided to ______. He wanted to work till midnight.

A．work it over
B．work it out
C．work it off
D．work it up
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单项选择题
The profitable offices under the government were filled by men who had contracted luxurious habits of living which they would not lay ______.
A．off
B．out
C．in
D．aside
单项选择题
The surrounding shores were beautiful, almost uniformly clothed by ______ forest.
A．elementary
B．primeval
C．primary
D．prime
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