她连续第三年成为世界冠军。

She is the world ___champion for the third year in a row.

卫冕冠军明天将参加本次锦标赛的首场比赛。

The defending ___champion plays his first match of this tournament tomorrow.

上周我和一位国际象棋世界冠军一起玩了！

Last week I played with a person who was the world chess ___champion!