1. 销售   business   sale   to buy   sales tax   Hint Half-n-half Clue   2. 投资   to invest   to charge   tax   income tax   Half-n-half Clue   3. 工资等级   wage scale   meeting   to charge   to invest   Half-n-half Clue   4. 产品   interest income   income tax   product   business trip   Half-n-half Clue   5. 会议   meeting   company   tax   product   Half-n-half Clue   6. 税   on business   tax   price list   to pay   Half-n-half Clue   7. 销售税   meeting   wage scale   sales tax   to invest   Half-n-half Clue