How old was Leonardo da Vinci when he moved to Milan

A．He had done his first job badly.
B．He had given up his job as an accountant.
C．He spent too much time on art.
D．He didn"t do well in the Art College.

A．They are having a friendly chat.
B．One is interviewing the other.
C．They are talking about each other"s family.
D．One is asking about the other"s family background.