I.Put the words: “ed” into three columns:

wanted, played, helped, fitted, liked, watched, visited, looked, needed, remembered, stopped, talked, rented,

missed, studied, started, used, learned.

/id/: 
wanted , fitted , visited , needed , rented , studied , started . 
/t/:
helped ; liked ; watched ; looked ; stopped ; talked ; missed .
/d/ : còn lại 

/d/: played, remembered, studied, learned.

/t/: helped, liked, watched, stopped, talked, looked, missed, used.

/id/: wanted, fitted, visited, needed, rented, started.

/d/: played, remembered, studied, learned.

/t/: helped, liked, watched, stopped, talked, looked, missed, used.