1. betulla   beech   poplar   maple   birch   Hint Half-n-half Clue   2. pioppo   fir   chestnut   poplar   pine   Half-n-half Clue   3. abete   poplar   maple   fir   elm   Half-n-half Clue   4. acero   birch   poplar   elm   maple   Half-n-half Clue   5. cedro   cedar   fir   pine   chestnut   Half-n-half Clue   6. faggio   fir   beech   poplar   cedar   Half-n-half Clue   7. albero della castagna   chestnut   birch   oak   pine   Half-n-half Clue