Instructions
In the following questions, a sentence is given in active voice. Find the correct passive voice version from the given alternatives.
Solution
- Locate the Subject (someone), Verb (locked), and Object (classroom).
- The object of the active sentence becomes the subject of the passive sentence.
- The tense of the "be" verb must match the tense of the active sentence. (past perfect- had locked)
- The original subject (someone) is introduced with "by" (or dropped if unknown/unimportant), dropped here, since there is unknown person (someone)
Using these rules, " The classroom had been locked." is the right choice.
