根据动词过去式的词尾归类 picked,watered,tasted,cooked,listened,cleanned,planted,collected,watched,played,milked,pulled,studied/t/____________/d/__________________/id/_____________________

以一个辅音字母结尾的重读闭音节动词，双写词尾辅音字母，再加 -ed。 例如单音节的动词,过去式都应双写最后一个辅音字母,然后加ed

/t/ picked,cooked,watched,milked,
/d/ watered,listened,cleaned,played,pulled,studied
/id/ tasted,planted,collected