Select the option that expresses the given sentence in active voice.
The welcome song was sung by the girls of Class 7 at the farewell party.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → The girls of Class 7 sang the welcome song at the farewell party.
Active form of the simple past passive (irregular verb):
| Change | Passive | Active | Why |
|---|---|---|---|
| Doer becomes subject | by the girls of Class 7 | The girls of Class 7 | The girls do the singing, so they become the subject and “by” drops. |
| Tense kept | was sung | sang | “Was sung” is the simple past passive, so the active stays in the simple past. “Was” goes, and the past participle (V3) “sung” changes to the past form (V2) “sang”. |
| Subject becomes object | The welcome song | the welcome song (after the verb) | The song receives the action, so it goes after “sang”. |
| Full sentence | The welcome song was sung by the girls of Class 7 at the farewell party. | The girls of Class 7 sang the welcome song at the farewell party. |
Other irregular verbs change back the same way: was / were + V3 → V2. Example: The kite was flown by Dev. → Dev flew the kite.
Why the Other Options are Incorrect?
Option 1: The girls of Class 7 sung the welcome song at the farewell party. — Incorrect. “Sung” is the V3. It cannot stand alone as the past tense. The V2 “sang” is needed.
Option 3: At the farewell party, the girls of Class 7 have sung the welcome song. — Incorrect. “Have sung” is the present perfect. The passive “was sung” is the simple past.
Option 4: The girls of Class 7 were singing the welcome song at the farewell party. — Incorrect. “Were singing” is the past continuous. The passive “was sung” is the simple past.