Answer: B) Had to be restored.
Explanation for this question is being written.
Answer: C) They had visited Paris many times.
Answer: A) Hadn't been.
Answer: B) Met-had divorced.
Answer: B) Had his children picked up.
Answer: B) I'm sorry, I had been at Laura's house and I didn't see your calls.
Answer: B) Had
Answer: C) Had been.
Answer: B) Hadn't
Answer: A) Had recovered.
Answer: B) Had + participle.
Answer: B) Known
Answer: C) Had eaten.
Answer: D) Had put.
Answer: C) Had forgotten.
Answer: C) Had had.
Answer: A) Had started.
Answer: B) Past perfect.
Answer: B) Had had.
Answer: C) Had walked.
Answer: B) Had stayed.
Answer: A) A
Answer: C) 'd told.
Answer: B) Had not.
Answer: C) Past Perfect Tense.
Answer: B) Had been stolen.
Answer: B) Had lost.
Answer: D) Had cleaned.
Answer: D) Had lived, was born.
Answer: A) Had / been served.
Answer: D) Had changed.
Answer: C) Had finished.
Answer: D) Had
Answer: C) Had met.
Answer: D) Had finished.
Answer: D) Had been.
Answer: A) Had seen.
Answer: B) Had gone.
Answer: B) Had built.
Answer: A) Had
Answer: D) Had saved.
Answer: C) Past Perfect.
Answer: B) Had arrived.
Answer: D) Had been posted.
Answer: D) Had had.
Answer: A) Had stopped.
Answer: D) Not been.
Answer: B) Subject + had + past participle of the verb.
Answer: B) Had already shown.
Answer: B) You weren't careful enough.
Answer: D) Had happened.
Answer: B) Had started.
Answer: D) Had completed.
Answer: C) Had read.
Answer: D) Had died.
Answer: C) Had stolen.