hold，give，send，choose，open的过去式和过去分词是什么？ hold held heldgive gave givensend sent sentchoose chose chosenopen opened opened
open的过去式和过去分词 过去式：opened过去分词：opened第三人称单数：opens现在分词：opening
buy，do，have，see，open的过去式和过去分词是什么呀？ buy bought boughtdo did donehave had hadsee saw seenopen opened opened
