1) When did Roger federer begin to show how good he was?
→ He won his first Wimbledon title, the Wimbledon Junior, when he was sixteen. Over the next few years, he played all over the world. In Australia he played for his country in the 2000 Olympic Games. Then in 2003 he began to show how good he was
2) Did he win the Wimbledon Junior when he was sixteen ?
→ Yes, he did
3) Where did he play for his country in the 2000 Olympic games?
→ He played in Australia for his country in the 2000 Olympic games.