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Correct Answer: D) We should not have come here alone.
Correct Answer: C) I must have left them at home.
Correct Answer: D) Must have missed.
Correct Answer: C) Must have had.
Correct Answer: B) To indicate that we feel sure that something was not possible.
Correct Answer: C) You might have an accident.
Correct Answer: A) Shouldn't have.
Correct Answer: B) Shouldn't have come.
Correct Answer: D) Would have brought.
Correct Answer: A) Must have left for work.
Correct Answer: C) May have died.
Correct Answer: A) May.
Correct Answer: C) Could have had.
Correct Answer: B) Should have.
Correct Answer: A) Must have studied.
Correct Answer: A) Pablo must have bought a present.
Correct Answer: C) Must have taken them.
Correct Answer: B) Must have fallen.
Correct Answer: C) Could have.
Correct Answer: A) Must not.
Correct Answer: D) Can't have spent.
Correct Answer: A) May not.
Correct Answer: C) Peter could not have written that speech.
Correct Answer: A) To express a logical conclusion of a past event.
Correct Answer: B) Could have gone.