题目：the three little pigs
narrator：once upon a time,there were three little pigs,named pete,pat and paul.they were brothers.one day,they left their mother's house.it was winter.they wanted to build a new house.they met a man.he had straw to sell.
pete:can i please buy your straw?
straw seller:sure.what for?
先给你弄这些,你先用着
