Answer: A) Past Perfect.
Explanation for this question is being written.
Answer: B) He hadn't studied enough.
Answer: D) Had
Answer: A) Had finished.
Answer: A) S + Had not + past participle.
Answer: D) Had stated the difference of "Pulang Kampung" and "Mudik" -revised.
Answer: B) Had been.
Answer: C) Had started.
Answer: C) Had finished.
Answer: C) C
Answer: A) Past Perfect Tense.
Answer: C) Had left.
Answer: B) Had gone to bed, hadn't seen.
Answer: A) They had forgot the map and got lost.
Answer: B) Had already finished.
Answer: B) Had phoned.
Answer: B) Past Perfect Simple.
Answer: A) Past perfect tense.
Answer: D) Had seen.
Answer: B) Had finished.
Answer: A) Past
Answer: B) Had lived.
Answer: D) Had cleaned.
Answer: C) Had/done
Answer: D) Had changed.
Answer: D) Had analyzed.
Answer: D) Had, watched.
Answer: C) Had locked.
Answer: D) Had eaten.
Answer: B) Had made.
Answer: B) Had caught.
Answer: A) Had gone.
Answer: B) Had had.
Answer: B) Had
Answer: A) Correct
Answer: C) Had sent.
Answer: C) Had broken down.
Answer: A) Had
Answer: C) PAST PERFECT.
Answer: B) Hadn't thought.
Answer: B) Had broken.
Answer: B) Had met.
Answer: A) Had never met.
Answer: C) Hadn't finished.
Answer: D) Had won.
Answer: B) Had learned.
Answer: B) Had called.
Answer: B) Had seen.
Answer: B) Had just returned.
Answer: C) Had been.
Answer: C) Had checked.