Applied and Applied
Applied. The general principle is that if a verb ends in y, the y is changed to i in the past participle.
Apply is a regular verb so the past and past participle are both verb + -ed. You have to watch the spelling because "the y changes to i then you add -ed". applied
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, are, is" is "been."
The past participle of "will" is "willed."
The past participle is thought.
The past participle of "to" is "been." The past participle of "be" is also "been."
Being is the present participle. The past participle is been.