1. tape recorder   ji suan ji   dian hua   lu yin ji   lu ying   Hint Half-n-half Clue   2. post office   ji suan ji   xin wen   dian shi   you ju   Half-n-half Clue   3. advertisement   ji suan ji   dian shi   [an;guang] gao   [chuan;zhuan] xun zhe ，xin shi ，su [du;duo] gang wei   Half-n-half Clue   4. microphone   ji suan ji   xin jian   bao zhi   hua tong   Half-n-half Clue   5. postcard   ming xin [pian;pian]   lu yin ji   bao zhi   dian hua   Half-n-half Clue   6. letter   lu ying   xin jian   hua tong   bao zhi   Half-n-half Clue   7. news   dian [chuan;zhuan] ，dian [chuan;zhuan]   xin wen   you ju   ming xin [pian;pian]   Half-n-half Clue