4、a packet of 5、a box of 6、a kilo of 7、a cup of 8、a glass of 9、a pair of 10、a tin of 11、a bar of 12、a loaf of a、()rice b、()paper c、()milk d、()water e、()shoes f、()coke g、()butter h、()juice i、()chalk j、()jeans k、()scissors l、()cake m、()bread n、()news o、()meat p、()coffee q、()chocolate r、()ink