单项选择题

This lamp is too far from the outlet. You may need an extensive ______.

A．wire
B．cord
C．string
D．rope
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单项选择题
We were too tired to go on with our work, ______ we had a break.
A．accordingly
B．conversely
C．primarily
D．frequently
单项选择题
The mayor promised to ______ whether the clash was designed, or it just happened by accident.
A．look after
B．look about
C．look into
D．look ahead
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