-
最佳答案:be 过去时was,were 2.know过去时knew break 过去时 broke 4.leave过去时leftbuy过去时b
-
最佳答案:InfinitivePast tenseam. iswasarewerebecome becamebeginbeganblowblewbreakbrokebri
-
最佳答案:am -wasneed-neededline -linedfollow -followedlearn -learnedopen -openedlook -loo
-
最佳答案:不规则动词 bet bet/betted bet/betted bid bid bid broadcast broadcast broadcast burst
-
最佳答案:可以加,也表示特指