From the words or group of words lettered A to D, choose the one that best completes the sentence.
The suspect ... when I entered the office.
Answer Details
The best option to complete the sentence is "was being questioned." This is because the sentence is in the past tense, and "was being questioned" is the past continuous tense form of "is being questioned." The use of the past continuous suggests that the questioning was already in progress when the speaker entered the office, and may still be ongoing. Options A and B use the present perfect tense, which suggests an action that started in the past and may or may not be ongoing, while option D uses the present continuous tense, which implies that the questioning is currently happening but does not indicate when it started.