单项选择题

Mrs. Wilson works more slowly than the other secretaries because she takes pride ______ everything that she does.

A．in
B．of
C．to
D．on
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单项选择题
The disease has completely ______ in this country.
A．died out
B．died down
C．died away
D．died off
单项选择题
Smoking is a very bad habit, which many people find difficult to ______.
A．break
B．beat
C．breathe
D．cough
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