Help asap thanks What is an irregular past tense verb?

Verbs which can be placed in the past form simply by adding -ed (for example walk= walked)

Verbs that are placed in the past form simply by adding 'did' (for example watch=did watch)

Verbs with past tense forms that are more 'erratic' for example 'buy=bought'

An irregular verb in the past obviously

do i dare, or should i, or maybe i should anything similar to these statements would be correct

explanation:

active voice: my father cut the tree.

passive voice: the tree was cut by my father.

active voice: people buy newspapers every day.

passive voice: newspapers are bought (by people) every day.

active voice: people have been using movies as political propaganda since world war ii.

passive voice: movies have been used as political propaganda since world war ii.

active voice: donna gave me my birthday present.

passive voice: i was given my birthday present (by donna). / my birthday present was given to me (by donna).

active voice: mom will leave the keys on the counter.

passive voice: the keys will be left (by mom) on the counter.

the words in parentheses are the agent of the passive voice and can be omitted when obvious, generic, or simply unnecessary.