- Five miles have been cycled by us.
- Five miles had been cycled by us.
- Five miles will be cycled by us.
- Five miles have been cycled by us.
The correct passive voice transformation maintains present perfect tense: “Five miles have been cycled by us.” Both options A and D appear identical in the provided list, indicating a possible duplication. The structure follows: object becomes subject, “have been” (plural subject), past participle “cycled,” plus agent. Present perfect passive emphasizes the distance covered rather than who covered it.
