They learn (from) each other and (help) each other.为什么要填这两个词?

问题描述:

They learn (from) each other and (help) each other.为什么要填这两个词?

They learn (from) each other and (help) each other.
他们相互学习,相互帮助.
learn from sb 是固定结构,表示“向...学习”.help与前面的learn并列,是谓语动词.