单项选择题

The company's training plan was designed to help the employees to improve their work habits and ______.

A．proficiency
B．sufficiency
C．insufficiency
D．efficiency
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单项选择题
Lessons written in blood ______ the colonial people to uprising.
A．propelled
B．prompted
C．promoted
D．proceeded
单项选择题
Helen was s6 persistent that her husband ______ at last.
A．conceded
B．converged
C．conceived
D．conferred
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