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