下列单词的过去式及规律①put________cut_______hit_______read_______let_______beat_______hurt_______cost_______规律___________________②keep_______sleep_______sweep_______规律_________________③teach_______catch_______规

　　下列单词的过去式及规律

　　①put________cut_______hit_______read_______let_______

　　beat_______hurt_______cost_______规律___________________

　　②keep_______sleep_______sweep_______规律_________________

　　③teach_______catch_______规律________________

　　④bring_______buy_______think_______规律__________________

　　⑤begin_______drink_______ring_______sing_______swim_______sit_______规律_______________⑥lend______send_______spend_______build_______规律______________

　　⑦sell_______tell_______规律_______________

　　⑧say_______pay_______规律_______________

　　⑨meet_______feed_______规律_______________

　　⑩grow_______know_______throw_______fly_______

　　规律_______________最好清晰一些准确一些