Mary became an actor when she was four(对划线部分提问) ____ ____ Mary ____ an actor?
问题描述:
Mary became an actor when she was four(对划线部分提问) ____ ____ Mary ____ an actor?
when she was four下加下划线
答
Mary became an actor when she was four(对划线部分提问) When did__ Mary become_ an actor?