问题描述：
9. As a result of the serious flood, two-thirds of the buildings in the area . [2007 陕西卷]
A.need rcpairing B.needs to repair
C.needs repairing D.need to repair
为什么选A?
A.need rcpairing B.needs to repair
C.needs repairing D.need to repair
为什么选A?
问题解答：
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