Three hours will have passed when the bell ______?
- Rings
- Will be ringing
- Will be rung
- None of these
Explanation
- When using future perfect tense ("will have passed"), the clause with "when" takes present simple tense — not future.
- So, the correct sentence is: "Three hours will have passed when the bell rings."
Last verified on 17-05-2026
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- None of these