Rome was not built in a day.
- A. They did not build Rome in a day.
- B. They could not build Rome in a day.
- C. The Romans did not build Rome in a day.
- D. They have not built Rome in a day.
Explanation
The passive subject “Rome” becomes the object, while the implied builders become the active subject “the Romans.” Thus the active form is “The Romans did not build Rome in a day.”
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