Answer: C) Had been.
Explanation for this question is being written.
Answer: A) Had been traveling.
Answer: C) Had been testing.
Answer: A) Had been running.
Answer: A) Had been looking.
Answer: D) Had been cleaned.
Answer: D) Had been going out.
Answer: D) Had been going.
Answer: B) False
Answer: D) Had been reading.
Answer: C) Had been waiting.
Answer: B) She had been practicing.
Answer: C) Past perfect continuous tense.
Answer: A) NO CHANGE.
Answer: C) Had been living.
Answer: D) Had been sleeping.
Answer: C) Had been working.
Answer: A) Had been waiting, arrived.
Answer: B) By the time; had been cooking.
Answer: C) Past Perfect Continuous.
Answer: D) Had been living.
Answer: B) Had been promoting.
Answer: A) True
Answer: B) Had been studying.
Answer: D) Had been strumming.
Answer: B) Had been snowing.
Answer: E) Had been working.
Answer: C) Had been rhythmically beating, wasn't.
Answer: C) Had been playing.
Answer: B) Had been trying.
Answer: A) I had been going to bed late becase I had to study for my Science test.
Answer: B) Had been studying; got.
Answer: A) Had been waiting.
Answer: A) Past perfect continuous; it emphasizes the duration of practice before a past event.
Answer: D) Past Perfect Progressive.
Answer: B) Past Perfect Continuous.
Answer: E) Past perfect continuous.
Answer: D) Had been snowing.
Answer: A) Had been teaching.
Answer: B) Had been doing.
Answer: B) Had not been sitting.
Answer: B) Had been lying, was spotted.
Answer: A) HE HAD BEEN studyING for two hours.
Answer: B) Mr Bert had been teaching for five years.
Answer: A) Had been training / were.
Answer: B) Had been dancing.
Answer: B) Had been lying.
Answer: A) She had been knowing the secret for a week.
Answer: D) Had been wishing.
Answer: D) Just
Answer: A) Had been.
Answer: D) Had been typing.
Answer: A) Past perfect continuous tense.
Answer: A) By the time we arrived, they had been waiting for us.
Answer: D) Had been waiting.
Answer: D) Past perfect continuous tense.