【有关动词ing作主语时的谓语动词Gettingupandgoingtobedearlyisgood.这句动词是用单数吗?healthyeatinghabitsandrunninghelptobuildmeup的动词为啥不用单数?】

　　有关动词ing作主语时的谓语动词

　　Gettingupandgoingtobedearlyisgood.这句动词是用单数吗?

　　healthyeatinghabitsandrunninghelptobuildmeup的动词为啥不用单数?