Grandpa: Yes. I finally bought one.

Roxy: Great. What are you doing on it?

Grandpa: I’m uploading some old photos.

Roxy: Can I see?

Grandpa: Sure.

Roxy: Oh, that’s me when I was here before. My hair looks funny.

Grandpa: Do you remember the time when we went to Stonehenge?

Roxy: Of course. We met Professor Peacock there by coincidence.

Grandpa: I was surprised you knew who he was.

Roxy: Well, the reason why I did is because I’m interested in archaeology.

I still can’t forget the day (when/that) we met.

I still can’t forget the time (when/that) we met.

I still can’t forget the year (when/that) we met.

I still can’t forget the moment (when/that) we met.

The reason (why / that) I recognized him is because I’m interested in archaeology.