"Discuss" is a regular verb; therefore, its past participle is "discussed".
The past participle of the word "have" is "had."
The past participle of "discussion" is "discussed."
The past participle of the word "pick" is "picked".
The past participle of the word "finish" is "finished."
The past participle of the word 'fall' is 'fallen'.
The past participle of the word "have" is "had."
Yes, the word discussed is the past participle, past tense of the verb to discuss (discusses, discussing, discussed). The past participle of the verb is also and adjective, for example the discussed agreement.
The past participle of "discussion" is "discussed."
The past participle of the word "pick" is "picked".
The past participle of the word "finish" is "finished."
The past participle of the word 'fall' is 'fallen'.
The word "it" does not have a past participle as it is a pronoun. It is only verbs that have a past participle.
The past participle of the word "drag" is "dragged."
The past participle of the word "touch" is "touched."
The past participle of the word 'be' is 'been'. 'They had been running fast for several minutes.'
The past participle of the verb to have is had.
Done is the past participle.