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Question 52

With a spare key, we could ___ opened the workshop without calling the caretaker.

  1. haveCorrect answer
  2. of
  3. then
  4. than

Explanation

The sentence describes an unrealised past possibility, which requires could have plus opened. Could of mistakes the sound of could've for a prepositional phrase and is not standard English.

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Question 52: With a spare key, we could ___ opened the workshop without… · Commonly Confused English Words · Questena