1. 水泳　   water polo   billiards   swimming   horse-riding   Hint Half-n-half Clue   2. 拳闘　   boxing   gymnastics   swimming   billiards   Half-n-half Clue   3. 玉突き　   horse-riding   ping-pong, table tennis   billiards   baseball   Half-n-half Clue   4. 野球　   baseball   gymnastics   horse-riding   water polo   Half-n-half Clue   5. 卓球　   horse-riding   ping-pong, table tennis   wrestling   water polo   Half-n-half Clue   6. 水球,   horse-riding   gymnastics   swimming   water polo   Half-n-half Clue   7. 体操　   gymnastics   horse-riding   ping-pong, table tennis   billiards   Half-n-half Clue