Your hand is dirty.It needs -.A.to wash B.to be washing C.be

只能选D,ABC要改也只能改成D,这里是主动表被动,主动形式表示被动意义的词有：want、need、require、deserve,后用动名词的主动形式,这时,动名词同句中的主语有动宾关系.
如：The children need looking after.孩子们需要被照料.
The windows requirea repairing.窗户需要被修理.
The point deserves mentioning.这一点值得一提.