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?

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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?

need的被动语态有两种形式:
need doing=need to be done

need 后加ing形式表示被动;
need to done也可以

need 加 动词ING 意思是被需要