Which of the following options is the most suitable conversion of the following sentence into active voice?
The gate must not be left open by anyone.
Show answer & explanation
Correct answer: B
Explanation
Correct Answer
No one must leave the gate open.
Explanation
The given sentence is in the passive voice with the modal verb “must not” (“The gate must not be left open by anyone”). In active voice, the structure becomes Subject + must not + base verb + object. Replacing “by anyone” with “No one” gives the correct sentence: “No one must leave the gate open.”
The other options are incorrect. Option 1 changes the structure and uses the continuous form unnecessarily. Option 3 is not an active voice transformation but a rephrased passive idea. Option 4 is grammatically incorrect.
Key Points
For passive sentences with modal verbs, use the structure Subject + modal + base verb + object in active voice. Replace “by anyone” with “No one” when the sentence has a negative meaning.