1. 榆木   oak   maple   beech   elm   Hint Half-n-half Clue   2. 橡木   pine   beech   chestnut   oak   Half-n-half Clue   3. 雪松   cedar   chestnut   elm   birch   Half-n-half Clue   4. 槭樹   beech   maple   pine   poplar   Half-n-half Clue   5. 冷杉   chestnut   cedar   fir   oak   Half-n-half Clue   6. 杉木   elm   pine   beech   oak   Half-n-half Clue   7. 山毛櫸   maple   beech   elm   chestnut   Half-n-half Clue