On the previous day,I bought a pair of new shoes for my mother.—— —— —— ——，I ——a pair of new shoes ——my mother昨天，我给妈妈买了一双新鞋，怎么翻译，写在横线上On the previous daybought for —— —— —— ——，I ——a pair of new shoes ——my mother 昨天，我给妈妈买了一双新鞋