题目内容：

求know,stand,come,teacher,buy,cut,drink,swim,feel,meet,climb,eat,clean,open,catch的现在分词和过去式

优质解答

knowing,knew
standing,standed
coming,came
teaching,taught
buying,bought
cutting,cut
drinking,drank
swimming,swam
feeling,felt
meeting,met
climbing,climbed
eating,ate
cleaning,cleaned
opening,opened
catching,caught