最佳答案:opened 和过去式一样
最佳答案:noticedfollowedopenedhurried
最佳答案:亲,自己想想。。。。都是opened。望采纳
最佳答案:您好!分别是 opened 和 opened (同型)望您采纳,谢谢您的支持!
最佳答案:uy bought boughtdo did donehave had hadsee saw seenopen opened opened
最佳答案:原形,过去式,过去分词be、was / were ,beensee、saw ,seenair、aired ,airedclean、cleaned ,cleane