The head also （needs）blood.为什么“needs”需要添加“s”?

The head also （needs）blood.为什么“needs”需要添加“s”? our blood takes food to all p___ of our body the head also needs b__ The body also needs exercise改成一般疑问句---the body also---exercise head the head the head the head the head the Sometimes the pledge also needs the dependence rumor to repay 的中文是什么意 She also needs to stir it _____ _____ that the rice doesn't burn 怎么填空?与这句话She also needs to stir it so that the rice doesn't burn 的意思相同，填空 英语翻译One also needs the lowest-order non-zero derivative to be of odd order (third,fifth,etc.).怎么翻译? the head of the The fence needs什么 The life needs exciting 填空,This is t----- .The boy must have enough sleep to be healthyExercise keeps the baby s----The h---- also needs blood Underline the head.急 at the head of the head of bump the head head in the over head ,the albatross 英语翻译Also,the discretisation of the nonlinear dependencebetween power generation,water discharge and head,usedin MILP to model head variations,augment the computational burden required to solve this problem.Hydro scheduling is in nature a nonl