Your taskFill in the gap in each sentence with the correct word or phrase.had forgottenhad already movedhad finishedhad brokenhad triedhad already recededhad rehearsedhad debatedhad grownhad studiedhad securedhad ever seeninvestedhad walkedhad the pilot landed0 / 15 answeredYour score0 / 150%Keep practising! Focus on the explanations below.1I realized I was in trouble because I (forget) to lock the front door.Correct answer: had forgotten▸ Why?The act of forgetting happened *before* the realization in the past, requiring the Past Perfect.2By the time the paramedics arrived, the witnesses (already / move) the injured cyclist.Correct answer: had already moved▸ Why?The witnesses moved the cyclist *before* the paramedics arrived. “By the time” indicates a prior completed action.3After the architect (finish) the initial sketches, she presented them to the board.Correct answer: had finished▸ Why?The completion of the sketches was the first action in the sequence, followed by the presentation.4The detective noticed that someone (break) the window from the inside.Correct answer: had broken▸ Why?The window was broken *before* the detective arrived to notice the evidence.5By the middle of the 19th century, many explorers (try) to find a passage through the Arctic.Correct answer: had tried▸ Why?The attempts by explorers occurred *before* the reference point of the “middle of the 19th century”.6When the news reporter finally reached the village, the floodwaters (already / recede).Correct answer: had already receded▸ Why?The water level went down *before* the reporter arrived to document the event.7The actor felt much more confident because he (rehearse) his lines for three months.Correct answer: had rehearsed▸ Why?The three months of rehearsal took place *prior to* the moment of feeling confident.8Before the new law was passed, the committee (debate) the issue for weeks.Correct answer: had debated▸ Why?The debate happened and was completed (or in progress) *before* the law was officially passed.9Lucia didn't recognize him because he (grow) a thick beard since they last met.Correct answer: had grown▸ Why?The change in appearance happened in the time *before* their meeting.10The students were exhausted because they (study) for three exams earlier that week.Correct answer: had studied▸ Why?The studying occurred *before* the point in time when they felt exhausted.11Once the captain (secure) the ship to the dock, the passengers could disembark.Correct answer: had secured▸ Why?Securing the ship was the necessary first step completed *before* the passengers could leave.12It was the first time she (ever / see) a glacier in person.Correct answer: had ever seen▸ Why?The experience of not seeing one refers to the entire period *before* that first time.13Had the company (invest) more in security, the breach could have been prevented.Correct answer: invested▸ Why?This uses the Past Perfect in a conditional context, referring to an action that failed to happen *before* the breach.14By the time the sun set, the hikers (walk) nearly twenty miles.Correct answer: had walked▸ Why?The walking was a completed experience/distance *before* the specific point of sunset.15Scarcely (the pilot / land) the plane when the engines began to smoke.Correct answer: had the pilot landed▸ Why?This advanced structure requires the Past Perfect to show the landing was completed just before the smoke started. Note the inversion.Check AnswersPlease answer at least one question first.Found an error in this exercise? Let us know.