YOU SAID:

I can't believe you have done this

INTO JAPANESE

あなたがこれをやったとは信じられない

BACK INTO ENGLISH

I can't believe you did this

INTO JAPANESE

なんて事をしたんだ

BACK INTO ENGLISH

I can't believe you did this.

INTO JAPANESE

なんて事をしたんだ

BACK INTO ENGLISH

I can't believe you did this.