, his father took him to a small island and he lived there until eighteen.

A．When he was three               B．As a boy of three

C．At the age of three          D．Being three years old

________, his father took him to a small island and he lived there until eighteen．

1. A.
   when he was three
2. B.
   As a boy of three
3. C.
   At the age of three
4. D.
   Being three years old