Change the voice: The teacher has checked the answer sheets.
- The answer sheets are checked by the teacher.
- The answer sheets were checked by the teacher.
- The answer sheets have been checked by the teacher.
- None of these
Explanation
- Correct passive voice: The answer sheets have been checked by the teacher.
- The active sentence is in the present perfect tense: “has checked.”
- In passive voice, the structure is object + has/have + been + past participle + by + subject.
- “Answer sheets” is plural, so has changes to have.
- The past participle of “check” is “checked.”
Last verified on 11-10-2026
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- The answer sheets are checked by the teacher.
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