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