English

Watch-watched   
clean-cleaned
stop-stopped
arrive-arrived
return-returned
cook-cooked
walk-walked
visit-visited
work-worked
look-looked
like-liked
iron-ironed
play-played
study-studied
love-loved
open-opened
start-started
water-watered
climb-climbed
stay-stayed
call-called
kiss-kissed
tidy-tidied
wash-washed

Helen usually waters the plants but yesterday Peter watered the plants.
Helen usually answers the phone but yesterday peter answered the phone. Hellen usually types the letters but yesterday Peter typed the letters.
Hellen usually posts the letters but yesterday Peter posted the letters.