Both are 'studied'.
The simple past and past participle are both studied.
Studied is the past participle of study. Studying is the present participle.
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.
Studied is the past participle of study. Studying is the present participle.
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 tense is blew. 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.
"Smiled" is the past tense and past participle of "smile".
The simple past tense is flew. The past participle is flown.