The money he has contributed in the past years to the disabled is now considered to be o

问题补充：

The money he has contributed in the past years to the disabled is now considered to be of great value.

A. help

B. helping,

C. having helped

D. being helped

答案：

A. help

(答案→)B. helping,

C. having helped

D. being helped

解析：本题中含有一个定语从句he has contributed in the past years to the disabled，修饰先行词the money，在定语从句中省略了that/which指代先行词作为动词contribute的宾语，句中的to是一个介词，后面的helping作为介词to的宾语。句义：在过去的几年里他花在帮助残疾人身上的钱现在被认为是很有价值的。故B正确。