In passive voice, the object all flights becomes the subject. With a plural subject and past tense, the verb is were cancelled. Option 2 drops all, option 3 has wrong number agreement, and option 4 changes the structure. Option 1 is correct.
Choose the correct option to change the given sentence from Active Voice to Passive Voice :
They cancelled all flights because of fog.
Held on 30 May 2023 · Verified 13 Jul 2026.
All flights were cancelled because of fog.
Flights were cancelled because of fog.
All flights was cancelled because of fog.
Because of fog flights got cancelled.
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Work through every CUET UG VA PYQ, year by year.