Where did you lose your purse? 你把钱包丢哪儿了？

I have no idea where I lost it 我不知道我把它丢哪儿了。

I don't remember at all. 我根本不记得了。

Now think it again. Where did you take your purse last time? 现在再仔细想想，你最后一次带钱包是在什么时候？

I don't remember at all. 我根本不记得了。