Answer: B) Had been looking; understood.
Explanation for this question is being written.
Answer: E) Had been planting.
Answer: A) True
Answer: B) Past Perfect Continuous Tense.
Answer: C) Past Perfect Continuous.
Answer: A) Came/ had been carrying.
Answer: A) Had been suffering.
Answer: D) Had been smoking.
Answer: D) Had been crying.
Answer: D) Had been.
Answer: C) Past perfect continuous Tense.
Answer: B) Had been working.
Answer: C) Had been fixing.
Answer: B) Had been doing.
Answer: C) Had been working.
Answer: A) Had been waiting.
Answer: C) Had been running.
Answer: A) Had been working.
Answer: B) Had been cleaning.
Answer: C) She had been writing her novel for three months before she took a break.
Answer: D) Had been translated.
Answer: D) Had been looking.
Answer: D) Perfect progressive.
Answer: A) Had been walking.
Answer: C) Had been crying.
Answer: A) Hadn't been.
Answer: D) Had been offering.
Answer: D) Had been reading.
Answer: C) Had been worrying.
Answer: A) Had been knowing.
Answer: C) Had been studying.
Answer: B) Past Perfect Continuous.
Answer: B) Had been shopping.
Answer: A) Had been.
Answer: C) Had been learning.
Answer: D) Had been living.
Answer: C) Had been living.
Answer: A) To show a long, continuous past action that caused a past result.
Answer: C) Had been playing.
Answer: B) Had been calling.
Answer: A) Had been sleeping.
Answer: C) Had been trying.
Answer: A) Had been playing.
Answer: C) Had been waiting.
Answer: D) Had been gathering.
Answer: B) Had been walking.
Answer: A) Past perfect progressive.
Answer: B) Had been waiting.
Answer: A) Had been driving.
Answer: C) Had been going; got.
Answer: B) Hadn't been working.
Answer: D) Three hours.
Answer: A) Had been demolishing.
Answer: B) Past perfect continuous tense.
Answer: A) Had you been learning.
Answer: B) Had been preparing.