1. 出租汽车，小室   ferry   taxi, cab   car   bus   Hint Half-n-half Clue   2. 摩托车，摩托车   van   bicycle   motorbike, motorcycle   truck, lorry   Half-n-half Clue   3. 自行车   bicycle   car   truck, lorry   limousine   Half-n-half Clue   4. 汽车   ferry   helicopter   car   truck, lorry   Half-n-half Clue   5. 小船   ship   boat   bus   helicopter   Half-n-half Clue   6. 公共汽车   taxi, cab   bus   van   airplane   Half-n-half Clue   7. 轮渡   ferry   train   ship   airplane   Half-n-half Clue