YOU SAID:
How are you so stupid?!
INTO JAPANESE
どのようにあなたは愚かなのですか?
BACK INTO ENGLISH
How stupid are you?
INTO JAPANESE
どのように愚かなですか。
BACK INTO ENGLISH
How stupid do.
INTO JAPANESE
どのように愚かなか。
BACK INTO ENGLISH
How silly?
INTO JAPANESE
どのように愚かです?
BACK INTO ENGLISH
How stupid is that?
INTO JAPANESE
どのように愚かなあれですか。
BACK INTO ENGLISH
How stupid that is?
INTO JAPANESE
どのように愚かなことですか。
BACK INTO ENGLISH
How stupid that is?
You've done this before, haven't you.