1. ゆうびんばこ　   radio broadcasting   letter box   express registered   public telephone   Hint Half-n-half Clue   2. こうしゅうでんわ　   radio broadcasting   express registered   public telephone   airmail   Half-n-half Clue   3. こうしゅうでんわボックス   voice-mail   public telephone   phone booth   telegram   Half-n-half Clue   4. え　   interview   picture   televiewer   telecommunication satellite   Half-n-half Clue   5. けいたいでんわ　   postage stamps   mobile   picture   post and telegraph office   Half-n-half Clue   6. ゆうびん　   telecommunication satellite   postman, mailman   post, mail   televiewer   Half-n-half Clue   7. ゆうびんりょうきん　   script   postage   airmail   postman, mailman   Half-n-half Clue