I found I wrote 'How did the problem solved?'
It should be 'How was the problem solved?'
I was going to write 'How did you or your frined handle the problem?'
but I changed my mind leaving the error unnoticed.
(didn't notice I forgot to change did to was.)
Sorry about it and hope you learn from my mistake!
THANK YOU!!
±×·¸°Ô ¾Ë°í ÀÖÀ»°Ô¿ä.~~~