Answer: C) Had been delivered.
Explanation for this question is being written.
Answer: C) I had been working until yesterday.
Answer: C) Had been painting.
Answer: A) Had been working.
Answer: C) Shelling peas.
Answer: A) He had been eating chocolate.
Answer: A) Yes
Answer: A) Past Perfect Continuous.
Answer: B) Had been washing.
Answer: C) They hadn't been playing.
Answer: B) Had been building.
Answer: A) Had been waiting.
Answer: B) Had been running.
Answer: A) True
Answer: D) Past perfect continuous.
Answer: B) Had been searching.
Answer: B) Had been waiting / arrived.
Answer: A) Had been training.
Answer: C) How long had you been skating?
Answer: A) Had been hiking.
Answer: C) I:beingC:been
Answer: A) Had been playing.
Answer: B) The sidewalk was slippery because it had been raining.
Answer: B) Had been finishing / decided.
Answer: A) Before the Smiths bought their new house, they had been looking for a suitable one for a year.
Answer: B) Had been crying.
Answer: C) Managed, had been studying.
Answer: A) Had you been learning.
Answer: C) Had been doing.
Answer: D) Had been working.
Answer: B) PAST PERFECT CONTINOUS.
Answer: B) Had been living.
Answer: B) Had been waiting, were.
Answer: A) Had been having.
Answer: A) Had been.
Answer: C) Had been looking.
Answer: D) Had been chasing.
Answer: B) Past perfect progressive.
Answer: A) Had been complaining.
Answer: B) If she had gone there yesterday, she would have seen you.
Answer: A) Had been talking.
Answer: B) Had been waiting.
Answer: A) Hadn't been playing.
Answer: B) 'd been travelling.
Answer: C) Perfect Continuous Past.
Answer: A) Had been studying.
Answer: B) Past Perfect Continuous.
Answer: A) Had been living.
Answer: D) Had been living.
Answer: C) To give background information about an action that was going on before the main past event happened.
Answer: D) Past Perfect Continuous.
Answer: C) To show that an action was ongoing up to a certain point in the past.
Answer: C) No, your sister had not been cooking fried rice.
Answer: C) Had been.