feed the animal能做主语吗?

feed　the　animals可以做主语吗 ----they----(feed)the animal at 5:00yesterday afterday feed animal ____ food Animal Husbandry And Feed Science? but the keeper in the zoo says,“please don't feed the animal 把the let farm feed on animal the 连个句子 英语里动词能做主语吗 which单独能做主语吗? 英语中形容词能做主语吗? feed the 定语从句中that能做主语吗.比如 I believe that is the best. 介词短语能做主语吗?比如：In the next photo are my grandparents.