Traveled,
Walked,
Visited,
Played,
Helped.
Если глагол правильный, то добавляем окончание ed,
а если неправильный, то смотрим в таблицу неправильных глаголов.
My cat is black
My cat is fat
My cat likes rats
Rats are grey and fat
I hate watching TV
I'd love to play with kids
I can't stand doing homework
I don't mind to bake some cakes
I want to be kind
I decide to graduate university
I look forward hearing from you
I will gift you a present next week
I'm keen on surfing
I can't stand boredom