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
Although the end of the term was close ______, Jim had not completed all of the projects he had hoped to finish.
A．on hand
B．by hand
C．at hand
D．in hand
单项选择题
Certainly man must ______ the future, and find ways of providing for his use.
A．look to
B．look up
C．look for
D．look on
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