Your taskChoose the correct answer for each question.0 / 15 selectedYour score0 / 150%Keep practising! Review the explanations below and try again.1There's no trace of the bracelet anywhere in the hotel room — it ___ while the cleaners were here.There's no trace of the bracelet anywhere in the hotel room — it ___ while the cleaners were here.must have been stolenshould have been stolenwould have been stolencan have been stolenCorrect answer: must have been stolen2This invoice is dated 5 April and it's now mid-June — it ___ weeks ago, not left sitting in the tray.This invoice is dated 5 April and it's now mid-June — it ___ weeks ago, not left sitting in the tray.should have been paidmust have been paidcan't have been paidwould have been paidCorrect answer: should have been paid3The depot scan shows the parcel sat on shelf B-4 from Friday evening to Monday morning — it ___ on a delivery van on Saturday.The depot scan shows the parcel sat on shelf B-4 from Friday evening to Monday morning — it ___ on a delivery van on Saturday.can't have beenshouldn't have beenmustn't have beenneedn't have beenCorrect answer: can't have been4The vase was upright when I went to bed — it ___ by the cat during the night.The vase was upright when I went to bed — it ___ by the cat during the night.might have been knocked overmust have been knocked overshould have been knocked overwould have been knocked overCorrect answer: might have been knocked over5The annual safety check is overdue by three months — it ___ well before the new term started.The annual safety check is overdue by three months — it ___ well before the new term started.should have been completedmust have been completedneedn't have been completedcould have been completedCorrect answer: should have been completed6Look at how clean the fence panels are — they ___ very recently by the contractor.Look at how clean the fence panels are — they ___ very recently by the contractor.must have been replacedshould have been replacedwould have been replacedshouldn't have been replacedCorrect answer: must have been replaced7This whole reputational crisis ___ if anyone in legal had read the early warning emails.This whole reputational crisis ___ if anyone in legal had read the early warning emails.could have been avoidedshould have been avoidedmust have been avoidedcan be avoidedCorrect answer: could have been avoided8In hindsight, that two-hour meeting ___ at all — every point could have been settled by email.In hindsight, that two-hour meeting ___ at all — every point could have been settled by email.needn't have been heldmustn't have been heldcouldn't have been heldwouldn't have been heldCorrect answer: needn't have been held9Frankly, that off-the-cuff remark ___ in front of the client — it was completely unprofessional.Frankly, that off-the-cuff remark ___ in front of the client — it was completely unprofessional.shouldn't have been madecouldn't have been madeneedn't have been madewouldn't have been madeCorrect answer: shouldn't have been made10Every slice of the gateau has gone and it's only three o'clock — it ___ between the cousins before dessert was even called.Every slice of the gateau has gone and it's only three o'clock — it ___ between the cousins before dessert was even called.must have been dividedshould have been dividedcan't have been dividedwouldn't have been dividedCorrect answer: must have been divided11Without that whistleblower's tip-off, the leak ___ until many months later.Without that whistleblower's tip-off, the leak ___ until many months later.wouldn't have been discoveredwon't be discoveredshouldn't have been discoveredmustn't have been discoveredCorrect answer: wouldn't have been discovered12The fire-alarm system ___ during the renovation itself, not three weeks after the building reopened.The fire-alarm system ___ during the renovation itself, not three weeks after the building reopened.should have been testedmust have been testedneedn't have been testedcould have been testedCorrect answer: should have been tested13A small portion of the user records ___ during the database migration on Wednesday — we're still auditing.A small portion of the user records ___ during the database migration on Wednesday — we're still auditing.might have been lostmust have been lostshould have been lostneedn't have been lostCorrect answer: might have been lost14The lobby carpet was filthy yesterday and it's spotless now — it ___ overnight by the cleaning team.The lobby carpet was filthy yesterday and it's spotless now — it ___ overnight by the cleaning team.must have been cleanedshould have been cleanedwould have been cleanedcouldn't have been cleanedCorrect answer: must have been cleaned15Museum records show the Mona Lisa never left the Louvre that week, so the photograph ___ in the gallery in Florence.Museum records show the Mona Lisa never left the Louvre that week, so the photograph ___ in the gallery in Florence.couldn't have been takenshouldn't have been takenmust have been takenneedn't have been takenCorrect answer: couldn't have been takenCheck AnswersPlease 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