1. 어머, 정말 안됐다.어쩌다 그랬니?

Oh, I'm sorry. How did you do that?  ------->  Oh, that's too bad. How did it happen?

2. 계단에서 떨어졌어.

I fell to the staires. ------->​  He fell down the stairs.

3. 그런데, 나 병원에서 덕보를 만났어

By the way, I met Duckbo in the hospital.  ------->​  By the way, I met Dugbo at the hospital.​