Your hand is dirty. It needs .A. to wash B. to be washingC. being washedD. washing

问题补充：

Your hand is dirty. It needs .

A. to wash

B. to be washing

C. being washed

D. washing

答案：

A. to wash

B. to be washing

C. being washed

(答案→)D. washing

解析：考察固定结构。Sth need doing =sth need to be done某事需要被做；故D正确。