单项选择题

______ this computer network is a challenging job that requires a lot of expertise and effort.

A．Maintain
B．Maintaining
C．Maintenance
D．Maintained
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单项选择题
The opening night of the film festival is always a wonderful ______ filled with glamor and excitement.
A．direction
B．occasion
C．conflict
D．connotation
单项选择题
The jury in the bribery case ______ for 6 hours before finally reaching a verdict.
A．deliberated
B．renovated
C．interviewed
D．apologize
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