1571. When I reached there, I realised that I ______?
- A. Mustn’t have gone.
- B. Needn’t have gone.
- C. None of these
- D. Needn’t to have gone.
Check answer and explanation
Answer: Needn’t have gone.
Explanation The phrase " needn't have gone " indicates that the action was unnecessary but was done anyway. This is the correct use of " needn't have " in a past context to express regret or realization.