Both are 'studied'.
The simple past of study is "studied" and the past participle is also "studied."
The simple past and past participle are both studied.
Present: study Past: studied Past participle: studied
The past participle of the verb "study" is "studied."
The past participle of "study" is "studied."
The past participle of "study" is "studied."
The simple past and past participle are both studied.
Present: study Past: studied Past participle: studied
The past participle of the verb "study" is "studied."
The past participle of "study" is "studied."
The past participle of "study" is "studied."
The simple past of "blow" is "blew" and the past participle is "blown."
Both the simple past and the past participle are ground.
"Organized" is the simple past and past participle of "organize".
The simple past is "beat" whilst the past participle is "beaten".
The past tense of break is broke, and the past participle is broken.
The simple past of "smile" is "smiled" and the past participle is also "smiled."
Has is the present indicative of to have for the third person singular.The simple past and the past participle of to have is had.