Been.
am / was / been
I am happy
I was happy
I have been happy
The past participle of "am" is "been."
The past participle of "do" is "done." The past participle of "have" is "had."
The past participle of "am not" is "have not been."
The past participle of "do" is "done."
The past tense of "have" is "had," and the past participle is also "had."
The past participle of the word "have" is "had."
The past participle of "am not" is "have not been."
The past participle of "do" is "done." The past participle of "have" is "had."
The past participle of the word "have" is "had."
The past tense and the past participle is "answered".
The past tense of "have" is "had," and the past participle is also "had."
The past and past participle for "buy" is "bought."
The past participle of "was" is "been" and the past participle of "were" is also "been".
Being is the present participle. The past participle is been.
Eating is the present participle; eaten is the past participle.
The past participle is thought.
Present participle: developing Past form: developed Past participle: developed
Present participle: talking Past participle: talked