Correct Answer:
A. We are being watched
The correct passive voice for the sentence "Someone is watching us" is "We are being watched." To transform an active voice sentence in the present continuous tense into passive voice, follow these steps:
- Identify the object of the active sentence: "us" becomes the subject "We" in the passive voice.
- Identify the tense: Present continuous (is watching).
- Apply the passive voice structure for present continuous: Subject + is/am/are + being + past participle of the main verb.
Here, "watching" is the main verb, and its past participle is "watched." Since the new subject is "We," the correct form of "to be" is "are."
Thus, "Someone is watching us" becomes "We are being watched." This construction correctly conveys that the action of watching is ongoing and that the original subject ("someone") is unknown or unimportant.