Answer: C) Had missed.
Explanation for this question is being written.
Answer: B) Brothers and sister had already learnt.
Answer: A) Had
Answer: A) Had burnt.
Answer: D) Had slept.
Answer: B) Had / left.
Answer: A) Realized-had passed.
Answer: B) I had gone.
Answer: D) Had waited.
Answer: C) Had forgotten.
Answer: C) Had known.
Answer: A) True
Answer: B) Had
Answer: A) Had gained.
Answer: A) Didn't know/had.
Answer: A) Had been closed.
Answer: C) Had Tom done.
Answer: B) Had left.
Answer: A) Had finished.
Answer: C) Had written.
Answer: B) To indicate past perfect tense.
Answer: B) Had lost.
Answer: B) Found, had remained.
Answer: B) Had watched.
Answer: A) Had / experienced.
Answer: A) Had made.
Answer: C) Had cleaned.
Answer: A) Had won.
Answer: A) Hadn't dreamed.
Answer: A) Had taken.
Answer: D) Had purchased.
Answer: A) She had finished her homework before dinner.
Answer: B) Past perfect.
Answer: C) Had fed.
Answer: B) Had; closed.
Answer: D) She had eaten.
Answer: A) Correct
Answer: B) Reported-had captured.
Answer: A) Had cleaned.
Answer: C) Had already studied.
Answer: B) Had gone.
Answer: A) Had I stopped.
Answer: D) Had broken.
Answer: A) I had finished my assignment.
Answer: C) Had seen.
Answer: A) Had worked.
Answer: C) The day before.
Answer: A) Had seen.
Answer: B) Was had forgotten.
Answer: C) Had destroyed.
Answer: C) Had done.
Answer: C) Had watched.
Answer: C) Had run.
Answer: B) Had, eaten.