At a rainy Friday night,after class,my son and I came across a small shop selling all kinds of toys.It was very late,so there is quite a few minutes before the shop closed.Just then,my son was hooked by a set of toys.Because he had always behaved himself,so I asked him:"Do you like it?""Yes,it is second to none in funtions,I like it very much."That set included even dozen toys.I thought they were too many and too expensive.The saleswoman told me:"If you buy it,I'll give you a baker's dozen."