Multiple choice Which sentence is in past perfect tense? Sunju did 50 push-ups. Sunju did 50 push-ups perfectly. Sunju had done 50 push-ups. Sunju can only do 1 push-up. Reveal answer Fill a bubble to check yourself C Correct answer Explanation The past perfect tense is formed using 'had' + the past participle of the verb. 'Had done' correctly follows this structure.