I mentioned that he _____ in my room the previous day.

I mentioned that he _____ in my room the previous day.

Correct Answer: Had lain
Explanation: The correct verb form here is 'had lain,' the past perfect tense of 'lie' (to recline). It describes an action completed before another action in the past.

Incorrect Option 1: Will lie
Explanation: 'Will lie' is future tense, which is incorrect in this context.

Incorrect Option 2: Would lie
Explanation: 'Would lie' suggests a conditional future, which does not fit here.

Incorrect Option 3: Had laid
Explanation: 'Laid' is the past tense of 'lay' (to place something), which does not fit here since the context is about reclining, not placing something.