YOU SAID:

Why would you do such a thing?

INTO JAPANESE

そんなことはなぜでしょうか。

BACK INTO ENGLISH

Why would such a thing?

INTO JAPANESE

そんなことがなぜですか。

BACK INTO ENGLISH

Why is that?

INTO JAPANESE

 どうしてですか?

BACK INTO ENGLISH

& #xA0; why don't you?

INTO JAPANESE

・ #xA0;なぜでしょう?

BACK INTO ENGLISH

& #xA0; why?

INTO JAPANESE

・ #xA0;なぜでしょうか。

BACK INTO ENGLISH

& #xA0; why?.

INTO JAPANESE

・ #xA0;なぜでしょうか。。

BACK INTO ENGLISH

& #xA0; why?.