eating all kinds of vegetables ---- to build up your health.a helping B help C to help D helps为什么?

问题描述:

eating all kinds of vegetables ---- to build up your health.a helping B help C to help D helps
为什么?

D.
现在分词做主语,"eating all kinds of vegetables " 表示“吃各种各样的蔬菜”,这是一件事情做主语,那谓语动词就要用单数啊.
比如说:
Teaching is my job.