单项选择题

The old building is in a good state of ______ except for the wooden floors.

A．observation
B．preservation
C．conservation
D．compensation
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单项选择题
The old farmer was run down by a car. He was taken to the hospital and ______ on by the chief surgeon right now.
A．operated
B．having been operated
C．is operated
D．is being operated
单项选择题
When you put up wallpaper, should you ______ the edges or put them next to each other
A．coincide
B．extend
C．overlap
D．collide
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