单项选择题

All the staff members of the department made zealous efforts to clean up the hall for the Christmas party.

A．enthusiastic
B．concerted
C．gigantic
D．dedicated
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单项选择题
Factors leading to the crisis included poor regulation, mismanagement' and deception in the industry, and competition from other types of financial firms.
A．cheating
B．pollution
C．depression
D．abuse
单项选择题
The young man asked his parents not to worry because he was full of optimism about his career.
A．motivation
B．confidence
C．imagination
D．resolution
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