YOU SAID:
I can't believe that that thing happened.
INTO JAPANESE
私は事が起こったなんて信じられない。
BACK INTO ENGLISH
Can't believe I happened.
INTO JAPANESE
私は起こったなんて信じられない。
BACK INTO ENGLISH
I just can't believe.
INTO JAPANESE
私はただ信じられない。
BACK INTO ENGLISH
I just can't believe.
Come on, you can do better than that.