Answer: A) Had been preparing.
Explanation for this question is being written.
Answer: B) Had been working/ had worked.
Answer: D) Had been working.
Answer: B) Had been watching.
Answer: A) Been
Answer: C) Had been raining.
Answer: C) Had been cooking, arrived.
Answer: B) Had been waiting appeared.
Answer: A) Had been working.
Answer: B) Past Perfect Continuous.
Answer: D) Had been helping.
Answer: A) True
Answer: A) Had been running / began.
Answer: C) Had been studying.
Answer: D) Had been looking.
Answer: B) Had been cooking.
Answer: D) Had been waiting.
Answer: B) Had
Answer: B) Past perfect progressive.
Answer: A) Had been waiting.
Answer: A) Jessica had been attending college for three years when she and Hector met.
Answer: B) Had you been waiting.
Answer: C) Had been waiting.
Answer: D) Had been playing.
Answer: D) Had been pulled.
Answer: B) Had been working.
Answer: A) 'd been waiting.
Answer: C) Had been preparing.
Answer: A) Past perfect continuous tense.
Answer: B) Past Perfect Continuous Tense.
Answer: C) Had been speaking.
Answer: B) False
Answer: C) Had been trying.
Answer: B) Had been waiting.
Answer: D) Had they been traveling to China?
Answer: C) Saw / had been running.
Answer: A) Past perfect continuous.
Answer: E) Had been raining.
Answer: C) Had been calling.
Answer: D) Had been warming up.
Answer: A) Past perfect progressive.
Answer: A) Hadn't been studying.
Answer: D) Would not have been.
Answer: B) Hadn't been improving.
Answer: D) Had been studying.
Answer: B) She had been waiting for an hour.
Answer: C) Had been walking.
Answer: B) Had you been dating.
Answer: D) Had been fishing.
Answer: A) Had been searching.
Answer: C) Had been looking.
Answer: C) The sink had been overflowing.
Answer: C) 'd been queuing.