This sentence is in the present perfect tense (have/has + past participle). To change into passive voice: Object becomes subject: Our keys Use have/has been + past participle Subject becomes agent (optional): by us ➡️ "We have lost our keys." ✅ Passive: "Our keys have been lost by us."
Choose the correct passive voice: We have lost our keys.
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Question context
This question is part of 🗣️ Verbal Ability within the broader 🧠 Aptitude Mastery subject and appears in the ETEA Educational Testing and Evaluation Agency preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.