YOU SAID:
I do not know where the sauce is, I'm telling you.
INTO JAPANESE
ソースがどこにあるのかわかりません。
BACK INTO ENGLISH
I don't know where the source is.
INTO JAPANESE
私はソースがどこにあるのか分かりません。
BACK INTO ENGLISH
I don't know where the source is.
You've done this before, haven't you.