do study go clean stay visit have dont isnt 的过去式怎么写
题目
do study go clean stay visit have dont isnt 的过去式怎么写
答案
动词原形 过去式 过去分词
do did done
study studied studied
go went gone
clean cleaned cleaned
stay stayed stayed
visit visited visited
have had had
don't didnt
isn't wasn't
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