题目内容：

麻烦帮我找下know,put,ride,ting,sell,grow,spend,show,sing,sit,sleep的过去式.
对了，还有understand,write,blow,bring,buy,catch,cost,cut,dig,draw,draw,dream,drive,fall,feed,speak.如果实在不行，可以只答你所知道的。

优质解答

依次为：knew,put,rode,tinged,sold,grew,spent,showed,sang,sat,slept,understood,wrote,blew,brought,bought,caught,cost,cut,dug,drew,dreamed,drove,fell,fed,spoke希望对你有所帮助