study - studied spend -spent -spent go- went -gone be -was- been play-played shake -shook -shaken make- made-made begin -began- begun think- thought -thought have -had -had do -did -done take- took- taken run - ran-run write -wrote -written tell-told-told stay-stayed read-read-read put-put-put know- knew- known say -sad -sad. )
