Select the correct active form of the given sentence. The massive exterior wall of the old mansion was being painted by the skilled laborers when it suddenly started raining heavily.
- (a)The skilled laborers had been painting the massive exterior wall of the old mansion when it suddenly started raining heavily.
- (b)The skilled laborers are painting the massive exterior wall of the old mansion when it suddenly started raining heavily.
- (c)The skilled laborers were painting the massive exterior wall of the old mansion when it suddenly started raining heavily.
- (d)The skilled laborers painted the massive exterior wall of the old mansion when it suddenly started raining heavily.
Answer
Why
Correct — C. The verb was being painted is the past continuous passive: was/were + being + past participle.
Its active form is the past continuous, were painting. The doer, the skilled laborers, becomes the subject, and were agrees with that plural subject.
The when-clause (it suddenly started raining heavily) is not part of the change and keeps its words. That gives option (c).
Why the others are wrong
- (a)The skilled laborers had been painting the massive exterior wall of the old mansion when it suddenly started raining heavily. — had been painting is the past perfect continuous. It changes the tense as well as the voice, and a voice change must keep the tense of was being painted.
- (b)The skilled laborers are painting the massive exterior wall of the old mansion when it suddenly started raining heavily. — are painting is present continuous, but the passive verb was past (was being painted). It also clashes with started in the same sentence.
- (d)The skilled laborers painted the massive exterior wall of the old mansion when it suddenly started raining heavily. — painted is the simple past, the active of was painted. The given verb has being, which marks an action in progress, and that must survive as were painting.
Concept
A voice change swaps the roles of doer and receiver and keeps the tense.
Past continuous passive: was/were + being + past participle (was being painted).
Past continuous active: was/were + -ing form (were painting).
So drop the by-phrase, make the laborers the subject, and put the verb back into the -ing form with an auxiliary that agrees: laborers → were.
Key facts
- Past continuous passive: was/were being + past participle (was being painted).
- Past continuous active: was/were + -ing form (were painting).
- In the active sentence the auxiliary agrees with the new subject: the wall was, the laborers were.
Study next
Common traps
- Dropping the continuous aspect: was being painted becomes were painting, not painted.
- Keeping was from the passive once the plural laborers are the subject.
At 11 Sep 2024, 16:00, English Q.15 the same tense goes back to active: The letter was being typed by the secretary when the phone rang becomes The secretary was typing the letter when the phone rang.
This paper turns a passive question into active at 19 Jan 2026, 11:00 AM, English Q.21 (Why did your brother write such a letter?).
Related PYQs
No directly related past PYQ was found.