动词原形变过去式!
问题描述：
动词原形变过去式!
动词原形：leave,study,stop,happen ,speak,argue,steal,hurry,report,ring,look,pick,fllow,hold,hurt,ride,walk,think,want,break,build,hear,spend,sit,meet,take,teach,hear
答
left,studied,stopped,happened,spoke,argued,stole,hurried,reported,rang,looked,picked,held,hurt,rode,walked,thought,wanted,broke,built,heard,spent,sat,met,took,taught,heard
(by the way你打了两个hear.)