如何说明物品忘记丢哪儿了?

第一句：I have no idea where I lost it

A: Where did you lose your purse?

B: I have no idea where I lost it

第二句：I don't remember at all.

A: Now think it again. Where did you take your purse last time?

B: I don't remember at all.

l can't find my passport.

When can I get it back?

I probably left my passport here.