求一道高考单选题解释When I talked with my grandma on the phone,she sounded weak,but by the time we .up,her voice had been full of life.空上填的是hung,想知道这句话的翻译以及为什么hung up用一般过去时,her voice had been full of life用过去完成时.
问题描述：
求一道高考单选题解释
When I talked with my grandma on the phone,she sounded weak,but by the time we .up,her voice had been full of life.
空上填的是hung,想知道这句话的翻译以及为什么hung up用一般过去时,her voice had been full of life用过去完成时.
答