Resolved questions
ma chi l'avrebbe mai detto?

esempio :

Il primo allunaggio di un essere umano avvenne il 20 luglio 1969
The first landing of a human being took place July 20, 1969

Chi l'avrebbe mai detto cent'anni fa?
Who would have thought that was possible 100 years ago?

http://mymemory.translated.net/t/Italian/English/chi%20lo%20avrebbe%20mai%20detto

"who would have thought it"

esempio :

there is a 18 year old boy who is very thin.

20 years later you see again this boy who grew up and became very muscular.

Who would have thought! (that you would become so muscular)