Answer: B) Rang
Explanation for this question is being written.
Answer: A) Had been talking.
Answer: A) Was doing, came.
Answer: B) Was driving.
Answer: A) <variant>was looking.
Answer: A) Events in the very near future or interrupted actions.
Answer: D) Was studying.
Answer: C) Walking, heard.
Answer: D) Were watching.
Answer: C) Was not sleeping, came.
Answer: A) Was preparing-knocked.
Answer: B) Was doing/ started.
Answer: B) Cut, was playing.
Answer: D) Was driving.
Answer: B) Was studying.
Answer: B) Were walking / began.
Answer: C) Was just going.
Answer: A) Was living / started.
Answer: D) Arrived, was leaving.
Answer: B) Arrived/ were playing.
Answer: A) Were having / went.
Answer: A) Had been-asked.
Answer: B) Were dancing-woke up.
Answer: A) Knocked
Answer: B) When he saw.
Answer: B) Was installing.
Answer: B) Had been teaching; started.
Answer: A) Were trying, went out.
Answer: B) Imperfect
Answer: C) Had been working.
Answer: C) Was helping, came.
Answer: D) Fell down.
Answer: A) The past simple.
Answer: C) Had been sleeping.
Answer: B) Had been crying.
Answer: A) Were sleeping.
Answer: D) Came
Answer: B) Was studying / rang.
Answer: C) Saw / was playing.
Answer: C) Arguing-came
Answer: A) Heard
Answer: A) Started
Answer: B) Were playing / went.
Answer: C) Had been doing.
Answer: B) Was shopping / lost.
Answer: C) Moved, was studying.
Answer: B) Opened, were doing, was reading.
Answer: B) Was running.
Answer: C) Was chatting, banged.
Answer: A) Imperfect, preterite.
Answer: A) Was doing / was making.
Answer: B) Was watching.
Answer: B) Past continuous.
Answer: A) Was having / rang.
Answer: C) Was watching, rang.
Answer: D) Was speaking, knocked.
Answer: C) They burned themselves while they were preparing dinner.
Answer: A) Arrived
Answer: B) Was watching / rang.
Answer: C) Was looking.