study buy walk break water carry die teach remember forget look save think say speak stand 的过去时

study buy walk break water carry die teach remember forget look save think say speak stand 的过去时

study - studied
buy - bought
walk - walked
break - broke
water - watered
carry - carried
die - died
teach - taught
remember - remembered
forget - forgot
look - looked
save - saved
think - thought
say - said
speak - spoke
stand - stood