介绍:
Five little pigs are singing But the pigs sneak away one by one ...At last there is only one little pig singing.Who is sneaking in? What happens to the little pig?
五只小猪在唱歌，一个接一个的溜走，只有一只小猪在唱歌， 谁溜了进来？ 发生了什么呢？
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