1. 冬青属   rosewood   sandalwood   willow   holly   Hint Half-n-half Clue   2. 红木   walnut   spruce   rosewood   holly   Half-n-half Clue   3. 棕榈   cinchona   palm   holly   willow   Half-n-half Clue   4. 椰子   holly   palm   coconut   teak   Half-n-half Clue   5. 檀香木   palm   cinchona   sandalwood   willow   Half-n-half Clue   6. 云杉   sandalwood   holly   spruce   rosewood   Half-n-half Clue   7. 柚木树   sandalwood   coconut   teak   rosewood   Half-n-half Clue