feed sleep leave keep find prefer give save hunt guard help

现在进行时 单三S 过去式 过去分词
feeding feeds fed fed
sleeping sleeps slept slept
leaving leaves left left
keeping keeps kept kept
finding finds found found
preferring prefers preferred preferred
giving gives gave given
saving saves saved saved
hunting hunts hunted hunted
guarding guards guarded guarded
helping helps helped helped
living lives lived lived