问题描述：
In a year,there are four s_.And there are twelve m_.So we can know that every there _makes one_.
In a year,there are four s______.And there are twelve m_____.So we can know that every there _____makes one_____.(填空）
In a year,there are four s______.And there are twelve m_____.So we can know that every there _____makes one_____.(填空）
问题解答：
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