1. 买   sales tax   to buy   to charge   business   Hint Half-n-half Clue   2. 税   meeting   to charge   tax   wage scale   Half-n-half Clue   3. 销售税   sales tax   business hours   business card   on business   Half-n-half Clue   4. 商务旅行   business hours   to charge   business trip   on business   Half-n-half Clue   5. 公司   business trip   factory   to sell   company   Half-n-half Clue   6. 卖   sales tax   to invest   to sell   interest income   Half-n-half Clue   7. 工厂   business hours   factory   profit sharing   business trip   Half-n-half Clue