Answer: D) Had already read / had.
Explanation for this question is being written.
Answer: B) Entered, had left.
Answer: A) Had left / arrived.
Answer: A) Before she moved to New York, she had lived in London.
Answer: C) Their work was completed before we arrived.
Answer: A) Past Simple = past completed action, Past Continuous = past ongoing action.
Answer: A) Went
Answer: C) Had completed, started.
Answer: C) We arrived.
Answer: C) The past perfect is used to help describe a sequence of events that occurred in the past.
Answer: A) Had walked, saw.
Answer: A) To tell us the order of the past events or actions.
Answer: B) Had worn.
Answer: C) Past Perfect Tense.
Answer: B) Arrived
Answer: B) When she arrived at the airport, she realized she had dropped her passport.
Answer: B) Arrived / had left.
Answer: D) D
Answer: B) The patient had died before the doctor arrived.
Answer: C) By the time I met you I had worked in that company for 5 years.
Answer: D) Woke / had already prepared.
Answer: A) Arrived, had already left.
Answer: B) Had played.
Answer: B) Allowed, had showed.
Answer: B) Had studied / would have passed.
Answer: B) Had done/came.
Answer: B) Started / had eaten.
Answer: C) If i hadn't been so busy, I could have helped you.
Answer: D) Did not win, had not practiced.
Answer: D) Had called-went.
Answer: A) Remembered, had left.
Answer: C) Had already left/ arrived.
Answer: A) I had visited the city before.
Answer: B) Lala was very sad.
Answer: E) Was questioned / had been brought.
Answer: D) Has walked / have ordered.
Answer: B) Lived, had built.
Answer: A) Had hung-started.
Answer: B) HAD PLANNED / LEFT.
Answer: D) Had made, did.
Answer: B) Past Perfect.
Answer: A) Didn't have, had lost.
Answer: B) Had known / started.
Answer: C) Went
Answer: B) Had become/ conducted.
Answer: B) Remembered
Answer: D) All of the above sentences have both the simple past and the past perfect tenses.
Answer: A) PC
Answer: A) Wrote
Answer: B) Had finished, came.
Answer: B) Were building.
Answer: B) Past Perfect before Past Simple.
Answer: B) It clearly shows the neighbor's action was finished *before* the firefighters got there.
Answer: A) Had not forgotten.
Answer: A) Arrived; had left.
Answer: B) Hadn't met-had left.
Answer: C) Had finished-went.
Answer: B) Hadn't bought / told.
Answer: C) Arrived, had already prepared.