请根据句意、首字母、英文释义和中文提示, 写出句中所缺单词使句子通顺。
—You should take it three times a day.
韩旭家住在5楼,一天,他把装有30个鸡蛋的塑料袋从1楼提到家里,下列说法正确的是( )
—Where is the mouse?
— It's ____ the box.