第1个回答 2019-07-25
see的第三人称单数形式:sees;过去式:saw;现在分词:seeing。
open的第三人称单数形式:opens;过去式:opened
;现在分词:opening。
第2个回答 2009-08-26
spend spends spent
go goes went
see sees saw
fly flies flew
leave leaves left
swim swims swimmed
take takes took
get gets gotten
have has had
do does did本回答被提问者采纳
第3个回答 2009-08-26
spent spent
went gone
saw seen
flew flown
left left
swam swum
took taken
got got
did done