Answer: B) Were sleeping / exploded.
Explanation for this question is being written.
Answer: B) When one action interrupts another.
Answer: D) Was watching.
Answer: C) Was still raining.
Answer: A) Was playing/hit.
Answer: C) Was doing-was washing.
Answer: B) Was explaining.
Answer: A) Was reading, rang.
Answer: D) Was playing /started to.
Answer: C) Had been traveling.
Answer: A) Was walking / slipped.
Answer: B) Were preparing.
Answer: D) Past Continuous.
Answer: B) Were broadcasting.
Answer: C) Had been talking.
Answer: B) Was walking / saw.
Answer: C) Was going/discovered.
Answer: A) Past Continuous / Past Simple.
Answer: A) Came, was cleaning.
Answer: A) Were playing / went out.
Answer: C) Were having, rang.
Answer: A) Was reading / were preparing.
Answer: D) Were waiting/ happened.
Answer: A) Was sleeping /heard.
Answer: B) Was sitting / called.
Answer: D) 1st = imp; 2nd = pret.
Answer: D) Was being painted.
Answer: A) Came
Answer: B) To describe an ongoing background action that was interrupted by a discovery.
Answer: B) Was raining / went.
Answer: C) Was playing.
Answer: C) Was sleeping.
Answer: D) While I was cooking, my brother was doing his homework.
Answer: B) Was not reading.
Answer: B) Was driving/hit.
Answer: D) I was cooking dinner when the fire alarm rang.
Answer: C) Were you doing / rang.
Answer: A) Was eating, knocked.
Answer: B) Were having.
Answer: B) Was not being built/ struck.
Answer: C) Was listening.
Answer: B) Got home.
Answer: A) Was snowing; left.
Answer: D) Was doing.
Answer: B) WHEN
Answer: B) Was dreaming.
Answer: C) Was waiting.
Answer: A) Met
Answer: C) Was cooking.
Answer: A) Were going over.
Answer: C) Were walking, began.
Answer: A) Past progressive, simple past.
Answer: C) Were playing.
Answer: B) Were studying, said.
Answer: B) Was playing, called.
Answer: A) Was sitting / called.
Answer: C) Found / was walking.
Answer: B) False
Answer: A) Was sitting / heard.
Answer: B) Was sitting.
Answer: A) Were listening, rang.