Choose the correct option to change the given sentence from Active Voice to Passive Voice:
They cancelled all flights because of fog.
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → All flights were cancelled because of fog.
Active to passive voice (simple past):
| Change | Active | Passive | Why |
|---|---|---|---|
| Object becomes subject | all flights | All flights | “All flights” moves to the front, with “all” kept. |
| Tense kept | cancelled | were cancelled | Be + past participle in the same tense. The plural subject takes were: “cancelled” becomes “were cancelled”. |
| Agent (by ...) | They | – (dropped) | “By them” is dropped, because “they” refers to no one in particular. |
| Full sentence | They cancelled all flights because of fog. | All flights were cancelled because of fog. |
"Because of fog" stays.
Example: They postponed the exam. → The exam was postponed.
Why the Other Options are Incorrect?
Option 2: Flights were cancelled because of fog. — Incorrect. It drops "all", so it no longer says that every flight was cancelled.
Option 3: All flights was cancelled because of fog. — Incorrect. The plural subject "all flights" needs were, not "was".
Option 4: Because of fog flights got cancelled. — Incorrect.
- "Got cancelled" is an informal get-passive, not the standard be + past participle.
- It too drops "all".