小彼得是一个商人的儿子,他经常到爸爸的商店里去瞧瞧。店里每天都有收款和付款的账单要处理,彼得往往帮忙把这些账单送往邮局寄走,他渐渐觉得自己似乎也成了一个小商人。有一次,他忽然想出了一个主意:也开一张收款账单寄给他妈妈,索取他每天帮妈妈做事的 Peter, the son of a businessman, often visits his father’s shop. Every day there is a collection and payment bill to deal with the shop, Peter often help send these bills sent to the post office, he gradually felt himself seems to have become a small businessman. On one occasion, he suddenly came up with the idea of ​​sending a receipt to his mom and asking him to help mom everyday