YOU SAID:
I don't know where it's at.
INTO JAPANESE
どこにあるかわからない
BACK INTO ENGLISH
I don't know where it is.
INTO JAPANESE
それがどこにあるのか私は知りません。
BACK INTO ENGLISH
I do not know where it is.
INTO JAPANESE
それがどこにあるのか私は知りません。
BACK INTO ENGLISH
I do not know where it is.
You've done this before, haven't you.