Choose the best answer for each question.
(1) On the morning of January 9, 1980, the Wild Boy of Aveyron was captured. A villager (2) found him and first thought he (3) was an animal. Although the (4) police tried, they could learn nothing more about the boy's early life. A long scar (5) across his (6) neck suggested (7) foul play. Some (8) people thought that his neck had been cut (9) and he had been left for dead in the woods. (10) But why? And by whom? These (11) questions would never be answered. (12) It would (13) certainly remain a mystery.