Fill in the blank with the most appropriate option. Dan: Have you ever seen her secret house? Bob: Yes, _________ last year.

I'd seen it
I've seen it
I saw it
I did see it

The correct answer is: B. I’ve seen it

The other options are:

  • A. I’d seen it: This is in the past perfect tense, which is used to talk about something that happened before another event in the past. In this case, it would imply that Bob saw her secret house before Dan asked him about it.
  • C. I saw it: This is in the simple past tense, which is used to talk about something that happened at a specific time in the past. In this case, it would imply that Bob saw her secret house at some point in the past, but not necessarily before Dan asked him about it.
  • D. I did see it: This is in the emphatic form of the simple past tense, which is used to emphasize that something happened. In this case, it would imply that Bob saw her secret house and that he is sure of it.

The context of the conversation suggests that Bob saw her secret house sometime in the past, but not necessarily before Dan asked him about it. Therefore, the most appropriate option is “I’ve seen it.”